[Chris 91ciVX]

Hello all, Chris 91CiVX here to update my current DD project with great new's for all who are on a budget and wanted to know about that dreaded Z1 Mini-Me build being worth the time and effort to still have a reliable gas saving 90 whp 2095lbs 92-95si 5spd + VX Clutch & Flywheel go cart that can drive A/C as well.

My build has changed a lot since i started my account here and felt already like i wasn't accepted but never the less i'm here to try and help other's out that want the help from following along as i take my DD project EH2 down the 75 wet shot from Nitrous Express path to complement my engine's current spec's as follow's :

D15Z1 Block with 170,*** mile's.
D16Z6 Head with "Custom Chris91CiVX Spec's"
Full D16Z6 Intake Manifold with sensor's
Slotted D15Z1 Dizzy & M.S.D. External Blaster SS Coil on modded Z6 Cap
Big Aluminum Fuel Rail with 240cc injector's & Adjustable FPR
JDM 4-2-1 Header Thermal Tech wrapped
High Flow Cat 2 1/2 inlet & outlet on a full 2 1/2 inch Custom exhaust
Custom 05 Lotus Elise Stage2 Track exhaust converted to fit my EH
Apexi VAFC2 installed & tuned by me ( still working on a better tune )
Po7 Lean Burn ECU with OEM Wide-Band NO CEL"S
D16Z6 Wire's , 91 AWS Prelude Si B21 Spark Plug's , T/B coolant Bypass
D16Z6 92-95 Si Tran's mated to a D15Z1 170,*** mile clutch & flywheel


Thats a basic breakdown of my build so far but i can assure you all that if anyone had any question's regarding a lot of stuff that hasn't been covered above to build the D15Z1 Mini-Me without it running like crap and almost undrivable with out proper tuning on 240cc injector's on a lean burn ECU with a possible 7.8:1 Compression Ratio trying to drive a full car load up hill on A/C without down shifting like most people would have to in a untouched D15Z1 as it is.

I have learned so much thanks to site's like these's ( even though most people still wont go out of there way to help someone out ) but regardless the information once posted will alway's be there to help out someone who could take what I've done and better the design with proper positive input as i still don't have all the bug's worked out myself but it's a learning curve i'm willing to share with everyone if they are willing to listen and help out with advice & general friendship. As it sit my D15Z6HNM H ybrid N irtous M otor
as i like to call it get me on super unleaded pump gas from Shell Gas stations only 550 mile's mixed highway and city driving with a full car load of 5 people + fishing tackle, ice chest for cook out on the beach, in A/C with driving 75-80 mph the whole highway & burning out every 5th or 6th stop sign or light in the city, on a fresh 10-30 Mobil 1 High Mileage oil change before the trip with spending only $50 in gas and having 2 notch's before the Empty mark when i got back home from dropping off my cousin's & fishing tackle, ice chest, ect. ect.

Whew i'm tired and just realized it's really late so as i wrote already this is just a brief update on the New VX Tuner! So stay tuned as i bolt on my new Nitrous Express 75 Wet Kit and see if we can get the bottle filled by next weekend.

As always Thank's to all who helped me get where i am now and everyone here for the great info. Let's keep it different and interesting, we don't always have to accept the norm.

Any question's or tip's are always welcome and hopefully we can get a good build thread going here that actually has a end result ....

.....that isn't made up based on someone's biased opinion on what they THINK would be " trash " to attempt on a budget minded fun build that just needs some guidance from guru's like Bisi himself , let alone the good Dr. grace me with his awesome knowledge to guide my build in the right direction.

Oh and Major Prop's to " robster " for his build which ultimately lead me to start in the exact opposite direction in mean's of Compression Ratio's and power band's but i'm still learning so anything new you have to chime in with please don't hesitate.

Where i started 6 month's ago..... i'll never forget my grassroot's


Until later..., Chris91CiVX

 

[Chris 91ciVX]

Bump for updated pic's and walkaround video in a hour or so ....

Blasted batteries! Well i should have a Walk around video as well as more updated pic's with the Nitrous Express 75 Wet Kit Bolted and lines hooked up and concealed leading from engine bay to trunk, 15 lb bottle mounted in spare wheel well getting more jet's for a 50 shot soon! ( better safe then sorry! )

Tomorrow morning is another day!

 

[Chris 91ciVX]

Some touring footage of my Hybrid build. Check it out.

 

[Chris 91ciVX]

Still need to update my sig and avatar pic's but none the less my official update video hopefully is somewhat informative to whom it may solve those's unanswered question's about more less how the build will perform.

I will have driving footage & track slip's to help further document the progress of my build hopefully this weekend. Time will tell as $220 speeding ticket's never help out anything.

Until later guys, I need to get me some sleep now....Chris91CiVX

 

[wiledwhitecivic]

Sounds like he let you off easy. I was impounded, arrested, court fees, community service, 1 year driving probation. Close to $500.00
Build looks good, Nice work. I like the combination for DD pump nos or boost.

 

[Chris 91ciVX]

Sounds like he let you off easy. I was impounded, arrested, court fees, community service, 1 year driving probation. Close to $500.00
Build looks good, Nice work. I like the combination.

Well i wouldn't say he let me off easy as he flat out told me that the truck i was traveling 2 car's behind was going 55 while i was going 65 ( falling behind the truck more & more downhill offramp cruising the access road ) and didn't even bother to stop him too ( it was a 45 mph zone ) as we were both speeding according to the cop, and as i very calmly explained this to the cop being very nice and respectful, it was clear to me that no matter how much i said "Sir" or pointed out that we should have both been stopped if that was such the case but he just smiled back calmly and said there's nothing he can due about it. He already " wrote " the ticket.... as i was talking to him.

*sigh* All this does is bring my new grand total of traffic ticket's to a little over : $3,600 . Since the age of 14 yr's old. lol i barely get caught anymore.

Thanks for the kind word's. i must sleep now... been up all day since 37 hour's ago...LOL ... im getting the sleepy giggle's @ everything.

Chris91CiVX

 

[Chris 91ciVX]

Some touring footage of my Hybrid build. Check it out.

bump for new info...

 

[Chris 91ciVX]

Hello all! More recently i have been messing around with fuel's only to raise my suspicion that maybe Super Unleaded 93 Octane gas is whats causing my code 41 when i'm on a consistent throttle & above 3500 rpm which is in final gear 80-85 mph.

It would seem that using Regular Unleaded yields me more MPG's but with a light drop in power over 89 & 93 octanes pump gas we have down here.

If anyone has any kind of EXP in Lean Burn Engine Building , tuning , chime in at anytime with any helpful info that you might think is a better way to tune or go about thing's , ( Beside going with Hondata s300 for a more complete & solid Tune thats for my other build of a D15Z1 head + D16Z6 Block + Z1 CAM & Rockers , Z6 O2sensor or better ,)

Lol i have no prior EXP in doing this to 4 cyl's so if i can get this far pretty much on my own then imagine what could be created with some teamwork amongst the Community.

AAAHHHH i want my bottle filled!!!!! TRACK TIME!!!!!!

Chris91CiVX

 

[Chris 91ciVX]

Build looks good, Nice work. I like the combination for DD pump nos or boost.

Thanks! That's what i was shooting for after Zeals made sure that it would be cake walk for a Big shot of NO2 or Huge PSI's ( yea i know Before someone chimes in just to write the ever unusable info of " the rod's are tiny & weak. " Custom forged... need i say more... ) . Originally i was to use a 300ZX turbo on 12 psi with all accommodating part's needed to complete the build but as i was about to start putting together the rest of the kit ( which i still have the Turbo and Drag style manifold ) then my cousin told me about the NX kit he had for sell and hooked me up for only a $100!

I work on his car from time to time so i guess it's easily justifiable to him to help me out the way he did. He drive's a 91 AWS Prelude Si , I helped him put in the new B21 & trans when his untuned ebay turbo kit blew a hole in his block old setup of a rebuilt & bored 30 over B20 with taller gearing from the 89 Si B20 Prelude, from running 12.5 psi on nothing but the wastegate , OEM ECU , UNTUNED!!!
Lol was decently fast before it would start to break up in higher RPM's.

( His boost controller was disconnected by his brother who thinks he knows better based on what he make's up as he goes along i guess...) sealing the engine's fate and leading him to his current build. I want to snap some shot's of his car and put them up on my streetfire.net profile so that everyone may see what else i am working on all at the same time.

His current build setup is as follow's:

B21 block 70,*** mile's
B20 Si Trans
Small Weight reduction
Custom SRI
NGK HOTWIRES
MSD Blaster SS Coil
Full 2 inch Exhaust piping
Custom Duel tip Design Muffler with Slight deverter Valves
99 Si Wheels
Slight wire tuck
Slammed

Well that's all i can remember doing to it right now but more is soon to come from both project's of mine & his so stay tuned for updated Pic's and walkaround video of his car as well as maybe a closed course race between me and him, for a baseline performance test before spraying.

He's told me that on his way home from work that he was challenged by a cocky 2010 Base model Lancer and beat him by a car's length on the way.
So i know his car's no slow slow pig or something to that affect.

Chris91CiVX

 

[wiledwhitecivic]

You could do the fjt usdm d15 h-beam vitara set up because the z1 crank is like a b7 crank.

Or run d15a2 rods custom prepped like my b7/z6 mini me build with some kind of stock piston of your choice.

 

[Chris 91ciVX]

You could do the fjt usdm d15 h-beam vitara set up because the z1 crank is like a b7 crank.

Or run d15a2 rods custom prepped like my b7/z6 mini me build with some kind of stock piston of your choice.

Cool info! I had no clue of the Z1 and B7 cranks being almost the same. Well in that aspect it would seem to me that your second choice of attack is the best for my " Budget minded fun build " safeguarding the bottom end for 250 whp ( ordered some new jets... ) tuned even though this whole setup is being pulled once the finishing touch's are put on my Mini LS Vtec Z6/Z1 build but also insuring it's placement in my garage intact ready for action on the bottle.

If i really had too go custom forged it would be justifiable to me because i love car's slow or fast as long as it was built the proper way and made to last spirited driving while being mindful of the conditions and whereabouts of other people or motor vehicle's.

I'm still looking into a new set of forged piston's for the Z6 block i have for the Mini Ls Vtec build, I might just use the leftover OEM's from the Z6 block for my D15Z6HNM on those's D15a2 rod's you suggested of course after they receive some TLC.

If you dont mind my asking , what was needed to have done to the D15a2 rods in order to make them work on the B7 crank?

And if anyone else want's to chime in, i'm not too sure but now that i think about it, maybe that wont be such a good idea for my D15Z6HNM as my R/s ratio's would be way too out of usable compression range???

With using the D16Z6 intake mani , head & gasket on the Z1 cam i'm trying to keep the D15Z6HNM build still using the Po7 lean Burn ECU hacked with Apexi VAFC2 on the OEM wide-Band o2. so in theory the downfall of me throwing together the D15a2 rods + D16Z6 piston's while using the Z1 cam + ECU & o2 would make for a very unhealthy motor????

Maybe when i finish building the Mini LS Vtec i'll just pull the D15Z6HNM out as is & keep it in the garage so i can turn it on every once in a while and make some noise and just so i can say i have a extra running Hybrid Nitrous/Boost Motor laying around.

Chris91CiVX

 

[wiledwhitecivic]

Cool info! I had no clue of the Z1 and B7 cranks being almost the same. Well in that aspect it would seem to me that your second choice of attack is the best for my " Budget minded fun build " safeguarding the bottom end for 250 whp It's too bad they're not like the jdm d15b crank.

"I might just use the leftover OEM's from the Z6 block for my D15Z6HNM on those D15a2 rod's you suggested of course after they receive some TLC." If you can find a machine shop willing to press off the stock pistons without breaking them, more power too you. My local shops won't do it.

"If you dont mind my asking , what was needed to have done to the D15a2 rods in order to make them work on the B7 crank?" Nothing really needed except for different pistons. And you can still find these old civics in junk yards because no one wants the engines in them. D15a2-a3

"so in theory the downfall of me throwing together the D15a2 rods + D16Z6 piston's while using the Z1 cam + ECU & o2 would make for a very unhealthy motor????" R/s Ratio I don't know if ok or not, quench-slightly worse, compression-better than you have now but similar. A little stronger hopefully than z1 tooth pic rods.

"Maybe when i finish building the Mini LS Vtec i'll just pull the D15Z6HNM out as is & keep it in the garage so i can say i have a extra running Hybrid Nitrous/Boost Motor laying around."
From my example, it would be good idea to keep a spare engine ready to go when you start modding like this when running nos or boosting, just in case.
Chris91CiVX

I blew my vitara build from over heating the oil and needed to put a compromise engine together to get me by.
A kid payed me with a junky d15a2 bottom end for some work last summer. I was going to try and use the crank in a random b7 empty block but the main journal diameter size was between the d15 d16.
The rods were slightly thicker than d16 rods. The large and small ends were the same as b7 rods. Also 134mm long.

An OG member said they might be thicker but weaker like the 86-87 d16a1 rods. Lets hope to God that isn't true because it held 24lbs with the ebay 54 trim during the tunning session.
I can't say it was worth the cost because I'm into it $600 for the rebuild including a retune on a supposed budget build. The fjt b7 h-beam vitara set up that's not available yet, inspired this build.
Traded my old exhaust for a good core b7 engine
Arp rod bolts
Resized and balanced the rods
Micro polished the crank and chamfer the crank oil holes
Deck the head and block .009" in total.
Ebay set of new z6 knock off pistons with npr rings.
Instillation costs of pistons on the rods.
MLS HG.
Cryo the crank, pistons, rods, rod bolts, bearings for that extra 100hp over a stock d16 rod amount.
Some stuff I didn't need to do, but the cryo treater jacked up the price to do the rods this year from last year on some one else but threw in the crank also, for only a little more.

 

[robster]

Subscribed :bigok:

 

[Chris 91ciVX]

I blew my vitara build from over heating the oil and needed to put a compromise engine together to get me by.
A kid payed me with a junky d15a2 bottom end for some work last summer. I was going to try and use the crank in a random b7 empty block but the main journal diameter size was between the d15 d16.
The rods were slightly thicker than d16 rods. The large and small ends were the same as b7 rods. Also 134mm long.

An OG member said they might be thicker but weaker like the 86-87 d16a1 rods. Lets hope to God that isn't true because it held 24lbs with the ebay 54 trim during the tunning session.
I can't say it was worth the cost because I'm into it $600 for the rebuild including a retune on a supposed budget build. The fjt b7 h-beam vitara set up that's not available yet, inspired this build.
Traded my old exhaust for a good core b7 engine
Arp rod bolts
Resized and balanced the rods
Micro polished the crank and chamfer the crank oil holes
Deck the head and block .009" in total.
Ebay set of new z6 knock off pistons with npr rings.
Instillation costs of pistons on the rods.
MLS HG.
Cryo the crank, pistons, rods, rod bolts, bearings for that extra 100hp over a stock d16 rod amount.
Some stuff I didn't need to do, but the cryo treater jacked up the price to do the rods this year from last year on some one else but threw in the crank also, for only a little more.

Hello all once again, First in response to above : I just recently found out that the " Junk " Z6 block i have sitting around on my kitchen floor isn't suffering major Rod bearing damage after all so i might soon swap the block out to mate it once again to the Z6 head but this time with a Y8 headgasket i believe it is for a increased comp ratio due to the 2 layer design & run a 35 dry shot for now on the Po7-A00 Ecu & W-B o2.

I should be filling the bottle today later on as my cousin's dad help to secure a place for me to get my bottle filled 15 lbs for $35 of No2. Also i will be changing out that worn out clutch for the Z6 clutch & pressure plate with VX flywheel ( as it's lighter weight? ) so once i get bored of the dry 35 bumping it up to a wet 50 then 75.

I will do my best to get this all on video so as too help show what this build is like under a " Performance test " & keep in mind i have only managed to spend maybe a total of $650 to build my project until current spec's as listed in the Video Tour of my project 91CiVX.

Thanks to all who contribute their valuable information as well as your interest to help better a project that in the end benefits us all in case we feel bored enough to build another low compression pump gas boost or nitrous monster on a budget.

Stay tuned!!! Video Updates Coming Soon!!!

Chris91CiVX

P.S.
Lets keep our fingers crossed that the No2 doesn't end up forcing me to have to swap out the Z6 block sooner then i expect! :sweatdrop:
Eehh but then again a 9.4:1 comp ratio is a lot better then 7.8:1 on No2...

 

[Chris 91ciVX]

Oh and also i will be trying to swap over the OE oil Cooler/Warmer from the Z1 block over to the Z6 when i have to change blocks out due to too much nitrous on the Z1 block.

Lol Hopefully the Z1 will prove more sturdy then we all give credit for, so i have more time to save up for a properly built swap in Z6 as opposed to just slapping a new thinner head gasket and Z1 Oil cooler with no machine work or additional budget minded fortified key parts.

I should try to sleep now but i know that might not happen for a few more hour's as i will be checking out what ever info i can get my hands on to help steer me further in the right direction. Hopefully Bisi also response to the 3 email's i sent him as well but i know he gets a lot a day anyhow so it will take more time.

Again thanks all and i cant wait to eat me an enchilada plate tomorrow morning! Lol

Chris91CiVX

 

[robster]

There is no 2-layer gasket, they are all 3-layer!! Thats a myth!

The oem gasket will be compressed when instalt to a size of 0.028''

The P2H clearance of my z6 block / z1 head is 0,5mm / 0.02'' with a compression of 11.3:1 (head milled .002'')

I'm running 95 ROZ gas/fuel with 19-20:1 AFR till 4000rpm at part throttel and 16:1+- when the 2. valve gets activated.

 

[wiledwhitecivic]

I'm sure you know but if you have a way to pull some timing and make the upper end rich for the nos engagement through tuning you should be fine with a 35 shot.

 

[Chris 91ciVX]

There is no 2-layer gasket, they are all 3-layer!! Thats a myth!

The oem gasket will be compressed when instalt to a size of 0.028''

Really? Well shoot thats why i love this site as i honestly did not know that! Thanks for the correction, Lol well i would think it to be ok with going ahead to use the tq spec's for that " 2 layer " compression ratio on my current Z6 head gasket to increase the ratio a few point's. With it being as low as it is now, any bump in compression will help the nitrous kick even more to get that " Performance Value " out of a budget build.

Thanks for that, It give's me a good idea for a " Map " to create with the Apexi VAFC2 after i get that darn A/F monitor & repatch in the pressure sensor wire's back to the wire harness from the VAFC2 unit to allow the " fuel management " part of the device to activate.

As of now the only thing my VAFC2 is good for is information on current RPM in digital & analog form as well as the Correction rate of Fuel and adjusting RPM correction points.

The V-Tec controller that is also apart of the VAFC2 , is set to OE spec's and is currently controlled by the ECU itself with that being set in the VAFC2 to allow this flow threw or interrupt the signal and set the engagement point to a desired point that is functional for the Lean Burn mode to to active longer?

Thats what i have so far right now. Thanks to all for the response!

Chris91CiVX

 

[Chris 91ciVX]

I'm sure you know but if you have a way to pull some timing and make the upper end rich for the nos engagement through tuning you should be fine with a 35 shot.

I have already been searching threw the sticky's for tip's and just to see how the " shots of nitrous " affected other peoples engine's and more importantly how much i can realistically run without burning a hole in my piston earlier then i expect to spin a rod bearing lol.

As a matter of fact i am subscribed to robster's build as well and if it wasn't for those's timing mark's that were posted up in his thread to show the OE point's for the Z6 & Z1 as well as his solution to his build for the out of spec timing, I would have never been able to reset my timing to what i think is my optimal setting. I used the Z6 spec's to adjust my timing BTW.

Right now my car really does feel like a regular Z6 when in and out of it's powerband & V-Tec crossover point's as well with out being able to rev past 6300 rpm due to the Po7's Rev limit. Thanks to the new timing of course!

I will be picking up my Nitrous bottle @12:00-12:45am today from the refill place and honestly i cant wait. Feel like a child again but i am going to take my time and make sure nothing goes wrong during the whole learning process so i will be very level headed about this. Again i will be also bumping it up from the 35 dry to 50 wet today! So i will due my best to get this all on short video clips to show how slippy my clutch is now but hopefully 1 or 2 good run's on nitrous.

Chris91CiVX

 

[Chris 91ciVX]

Small Update!

Well first let me start with a big & report that the old slippy clutch is GONE!

Completely, so with that being said you all can pretty much guess that a decent test pass on a 35 shot running the P28 from a 94 EX 5spd ( whoo! got that for free too yesterday! Thanks to my cousin Carlos for swapping to JDM H22A ) wasn't happening at all as on motor alone just with the new upgrades of Accel 8.5mm wire's , P28 5spd ECU , and some newer P28 sensor's i got from another spare D16Z6 i managed to acquire from Carlos for Free!

He had just finished swapping over the D to the JDM H and had the D laying around my other cousin Daniel's garage floor. They are brother's, so i guess Daniel's mad @ Carlos for always just using him and never returning the favor and help out when he need's help with his car or cleaning the garage.

So today in a couple of hour's i will be picking up the new complete ( Running too! ) D16Z6 from Daniel's to drop back off at my house then i will be taking out the burnt clutch for the clutch out of the new Z6 , since i remember driving in Carlos's car before the swap with this Z6 and his clutch would let him burn out in 1st & scratch the hell out of 2nd with Big heavy ( Ugly ass ) 17's.

So many plan's, so much else to also focus my attention on that i AM taking care of all at the same time. Right now guys all while just turning 24 , i'm about to start up a local shop around my area to not only Tune & build engine's of all type's as well as brake job's , Tune up's , oil change's , Part Install's , Customer's custom fabrication work , i could keep going but i think you all can feel the vibe i am trying to emit, out of my 2 car garage asap when the landlord's mother move's out of this really kickass 1bedroom 850+ sq ft house on a huge close to 1/2 acre lot with a 5 1/2 ft tall fence that surrounds the property. Ironic that the Landlord himself is only 27 and is being paid a lot it seems for his expertise in plumbing as this is 1 of 3 house's he rent's out for the extra cash.

All has been discussed with the him too about my upcoming business to be out of the 2 car garage that also already has plumbing installed to for a sink & toilet, and all he wanted to know was if he could get a discount on labor lol.
He has a couple of car's but i'm trying to get him to buy like a 95 RX7 2 rotor Turbo that he showed me once after we started talking a bit.

Whew! well i guess that the bulk of the update in a nutshell but rest assure i will be posting up some good video footage soon so don't fret, i still need to change out my clutch in a couple hour's so it will be worth the wait.

Thanks again everyone for the contributions!
Chris91CiVX