Noobish Turbo Q's... - D-series.org

Go Back   D-series.org Motor Mayhem & Suspension Satisfaction Forced Induction

D-Series.org is the premier Honda All Forum on the internet. Registered Users do not see the above ads.
Reply
 
LinkBack Thread Tools Display Modes
Old 06-28-2009, 04:50 PM   #1 (permalink)
gonzo
 
iTrader: (0)
Join Date: Feb 2009
Location: Flor1d4.
Posts: 1,875
Rep Power: 0 sxysweed It's a JDM Star Bitches....
sxysweed It's a JDM Star Bitches....sxysweed It's a JDM Star Bitches....
iTrader Score: 0 reviews
Default Noobish Turbo Q's...

Been doing my research on Turbo's, still have a few questions though...

1.) Why is it that you want to go with low compression (like 7:1 or 8:1) Pistons when you build a D-Series motor for boost? The weak link in the D motos is the toothpic rods, so why not go with aftermarket rods and stock pistons and be golden?

2.) On that note, how much power will the stock (D16A6) pistons hold (boosted, and nitrous; assuming it's correctly tuned)?

3.) Why not a smaller, quicker spooling turbo working at higher PSI's and towards the peak of it's power-level vs. a larger, later spooling turbo at lower PSI's, for the same power level? You get quicker spool with the smaller one, so why not?

4.) Say I bought a D16A6 and re-built it, would it be stupid to re-buld the bottom end with aftermarket rods, but stock pistons?

5.) Any recommended turbo's for a street-driven (but driven hard) D16A6 with a power goal (stock internals) around 220hp?

6.) The HF Manifold w/Adaptor Plate, does that automatically rule out AC?

7.) Why do people run the turbo with the exhuast side facing the drivers side vs. facing the passenger side? To me it looks like you could flip the turbo around so it takes the air in from the drivers side? That way you don't have to worry about making a downpipe that will fit between the turbo and the AC Compressor?

I think that's it for now, just trying to grow my knowledge. Thanks.
sxysweed is offline   Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Old 06-28-2009, 05:01 PM   #2 (permalink)
D-series soldier
 
bumpstick's Avatar
 
iTrader: (31)
Join Date: Jan 2009
Location: Gaithersburg, MD
Posts: 956
Rep Power: 14 bumpstick is about to kiss the sky
bumpstick is about to kiss the skybumpstick is about to kiss the skybumpstick is about to kiss the skybumpstick is about to kiss the skybumpstick is about to kiss the skybumpstick is about to kiss the skybumpstick is about to kiss the sky
iTrader Score: 31 reviews
Default

1.) Forced induction raises the compression ratio when you are in boost, so lower compression pistons decrease the static compression ratio so that when in boost, the compression ratio won't be too high.

2.) I have seen cars with anywhere from 250 to 300 hp on stock D16 bottom ends. These are mostly the exception though and not the rule.

3.) Smaller turbos need to operate at higher boost levels in order to flow the same volume of air as larger turbos at lower boost levels. There is a trade off between bigger and smaller turbos so knowing what kind of power/where in the power band/how much power you want to make is the key to selecting your turbo.

4.) Yes, only because if you wound up needing new pistons you would have to crack the motor open again. It's never a bad idea to build too much motor rather than not enough.

5.) See number 3.

6.) I have no idea and I don't have AC anyways.

7.) Depending on your setup, you can probably face the turbo whichever direction you want, as long as everything has enough clearance.
__________________
CAST MANI MILLIONAIRES
bumpstick is offline   Reply With Quote Quick reply to this message
Old 06-28-2009, 05:15 PM   #3 (permalink)
All powerful D-series member
 
sick1camcivic's Avatar
 
iTrader: (5)
Join Date: Sep 2007
Location: L-burg,Va
Posts: 4,732
Rep Power: 17 sick1camcivic is a Top Aussie
sick1camcivic is a Top Aussiesick1camcivic is a Top Aussiesick1camcivic is a Top Aussiesick1camcivic is a Top Aussiesick1camcivic is a Top Aussiesick1camcivic is a Top Aussiesick1camcivic is a Top Aussiesick1camcivic is a Top Aussiesick1camcivic is a Top Aussiesick1camcivic is a Top Aussiesick1camcivic is a Top Aussie
iTrader Score: 5 reviews
Default

reason you dont want stock pistons is the rings are very close to the top of piston, no ring land. so they burn pretty quick. Vitara pistons are cast like stock but have teflon coating and some other goods in the metal that make them alot stronger than honda OEM. small turbos on engines that were built to breath up high in the rpm doesnt work out well. air gets hot, then no power to be made. our engines were made to make power higher in the rpm not down low. when racing you dont ever see below 5k rpms. so who cares how much power is down that low? Let that turbo spool then 4500+ rpms is balls to the wall power!!
__________________
RIP <3Jayda<3 2 yr old Boxer 8-14-2009

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

teamdohc.org
95 civic coupe ex. Vitara-hbeam Z6
New Project Built Turbo F2B F22A nonvtec into civic
93 Accord SE 4dr black9stock)
Owner @ Grab-a-Nekbrace ENT like us on Facebook!

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
sick1camcivic is offline   Reply With Quote Quick reply to this message
 
Old 06-28-2009, 05:30 PM   #4 (permalink)
Lifetime Awesome Member
 
ryan89crx's Avatar
 
iTrader: (80)
Join Date: Dec 2003
Location: Tri-Cities, Washington
Posts: 25,544
Rep Power: 443 ryan89crx is on a level you can only DREAM about! ! !ryan89crx is on a level you can only DREAM about! ! !ryan89crx is on a level you can only DREAM about! ! !ryan89crx is on a level you can only DREAM about! ! !ryan89crx is on a level you can only DREAM about! ! !ryan89crx is on a level you can only DREAM about! ! !ryan89crx is on a level you can only DREAM about! ! !ryan89crx is on a level you can only DREAM about! ! !ryan89crx is on a level you can only DREAM about! ! !ryan89crx is on a level you can only DREAM about! ! !ryan89crx is on a level you can only DREAM about! ! !ryan89crx is on a level you can only DREAM about! ! !ryan89crx is on a level you can only DREAM about! ! !ryan89crx is on a level you can only DREAM about! ! !ryan89crx is on a level you can only DREAM about! ! !
ryan89crx is on a level you can only DREAM about! ! !ryan89crx is on a level you can only DREAM about! ! !ryan89crx is on a level you can only DREAM about! ! !ryan89crx is on a level you can only DREAM about! ! !ryan89crx is on a level you can only DREAM about! ! !ryan89crx is on a level you can only DREAM about! ! !ryan89crx is on a level you can only DREAM about! ! !ryan89crx is on a level you can only DREAM about! ! !ryan89crx is on a level you can only DREAM about! ! !ryan89crx is on a level you can only DREAM about! ! !ryan89crx is on a level you can only DREAM about! ! !ryan89crx is on a level you can only DREAM about! ! !ryan89crx is on a level you can only DREAM about! ! !ryan89crx is on a level you can only DREAM about! ! !ryan89crx is on a level you can only DREAM about! ! !
iTrader Score: 80 reviews
Send a message via AIM to ryan89crx Send a message via MSN to ryan89crx
Default

Quote:
Originally Posted by sxysweed View Post
Been doing my research on Turbo's, still have a few questions though...

1.) Why is it that you want to go with low compression (like 7:1 or 8:1) Pistons when you build a D-Series motor for boost? The weak link in the D motos is the toothpic rods, so why not go with aftermarket rods and stock pistons and be golden? Not everyone goes with that low of compression. i run aftermarket rods and SRP stock compression pistons in my a6

2.) On that note, how much power will the stock (D16A6) pistons hold (boosted, and nitrous; assuming it's correctly tuned)? Stock a6 can reliably handle 220-250 depending on the tune

3.) Why not a smaller, quicker spooling turbo working at higher PSI's and towards the peak of it's power-level vs. a larger, later spooling turbo at lower PSI's, for the same power level? You get quicker spool with the smaller one, so why not? A smaller turbo will usually be out of its efficiency range by the time you reach the power levels that larger turbos make. unless of course is a BB turbo such as the GT28rs...which in that case the reason for not running one is because most poeple dont want to spend $1000+ on JUST the turbo

4.) Say I bought a D16A6 and re-built it, would it be stupid to re-buld the bottom end with aftermarket rods, but stock pistons? Yes, stock pistons wont handle much abuse before you lose a ring land. and on top of that, stock slugs are press fit wrist pins, and aftermarket rods only allow the use of floating wristpins

5.) Any recommended turbo's for a street-driven (but driven hard) D16A6 with a power goal (stock internals) around 220hp? Any straight t3 will get you there just fine. I would honestly run a .48/.60 from a late 80s T-bird. You can usually pick them up on ebay or the forums for under $100

6.) The HF Manifold w/Adaptor Plate, does that automatically rule out AC? Unless you want to get extremely creative(aka ghetto), yes a/c is out

7.) Why do people run the turbo with the exhuast side facing the drivers side vs. facing the passenger side? To me it looks like you could flip the turbo around so it takes the air in from the drivers side? That way you don't have to worry about making a downpipe that will fit between the turbo and the AC Compressor? Most people that run the DP on the driver side are running an a/c compatible setup. Most non a/c compatible setups run the DP on the passenger side

I think that's it for now, just trying to grow my knowledge. Thanks.
any more Qs?
__________________

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
[email protected]
Xbox 360 gamertag -
TurboDiesel598


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
, best bang for your buck!



To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
ryan89crx is offline   Reply With Quote Quick reply to this message
Old 06-28-2009, 05:32 PM   #5 (permalink)
D-series lover
 
ej8_thor's Avatar
 
iTrader: (1)
Join Date: Jul 2008
Location: Chilliwack BC
Posts: 195
Rep Power: 12 ej8_thor is trying to make new friends
iTrader Score: 1 reviews
Default

if you are on some what of a budget and even if your not for our d's you just cant beat the vitara piston combo be it with a stock length rod or a custom fj ibeam rod
like sick1camcivic said the small turbos when making the same power as a larger turbo you are more likely to be pushing some hot air in the engine and you are running at a higher load on the turbo now with that said its not get the bigger turbo just because of that when you are choosing a turbo what you wanna do with the car is a even bigger factor if you are gonna auto x then a smaller quicker spooling turbo is ussually the way to go as you are generally going to use a larger rpm range where as say drag racing you would go with the larger turbo as its balls to the walls high rpm all day long
and as for why some face passenger and others drivers side is ussually you have the down pipe on the drivers side as the turbo sits in closer to the block for a/c friendly setups but you are mostly limited to a 2 1/2 down pipe where with the down pipe facing the passengers side the turbo sits out away from the block and you are then able to run 3"+ size of downpipes but you more then likely will have to give up your a/c
ic you are some what new your best bet and i know we have all heard this a thousand times is just look around and search theres everything you need to know on here
__________________
1996 EX Coupe d16y8
ej8_thor is offline   Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the D-series.org forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


iconAll times are GMT -8. The time now is 08:38 AM. | Welcome to Forum, please register to access all of our features.