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We knock D serie have some oil pressure probleme over 7800rpm for hardcore setup, here is a solution by Mcleod!

this thing cost less then 2$ ... awesone eh?

but you need a Hallen key 8mm, 10mm and 12mm socket,

oil pan gasket in some case you dont have a rubber on like on my D16Y8 that are re-usable!

Here is how to do, first of all you need to remove the header, here is why the 12mm socket! i wont explain how, you will figure how...

then now you should drain the oil in the pan, cuz you dont want that oil to drop all over your face when removing the oil pan! they are a lots of 10mm bolt to remove...

when it will be removed, you should find this thing!



You will figure that you need the 8mm hallen key to remove it, be carefule, there is a spring beside this thing, and one metal piece that need to be in perfect shape for the oil pressure!



It will look like this when it will be removed.



Now how it work, it's very simple, it work like a boost controller, more the spring is tight, more oil pressure you will have, but be carefull! if you put a too big spacer on the bolt you gonna fuck the oil pressure, you will have too much, or no oil pressure at all! i do have try a big one and i was having pressure drop over 7200rpm because it was too tight!



Dont use plastic/abs or alluminum spacer to do this modification, here is what i use! 1/8" spacer that fit directly on the spring seat.



Once the spacer is installed on the bolt, just re-install it correctly, tighten it wizely





Here it is, appreciate your new safe oil pressure for high rpm setup!


PS : have a working oil pressure gauge before doing this thing! should have approximatly 80psi of oil over 4000rpm when warm, if you have more, use a smaller spacer!

:bubbrubb:
 
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Do you understand what the bypass does? NOPE! Bypassing what? the filter? raising the pressure of the bypass opening means the oil WILL be filtered at higher perssures than stock. This mod does NOT change the oil pressure other than when the engine is used out of factory specs...or unless you don't change your oil filter as often as you should. one variable in oil pressure is bearing tolerances. Don't belive me? Read a couple books on engine building...Mike Kojima's book will tell you alot.
 
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Hey guy, don't come in here with your 4 posts and a bad attitude. If you see this or someone else's setup with incorrect information, have the courtesy to address them like an adult in the first place. This isn't Honda-Tech so don't talk to people like they are in anyway inferior to you.

I have my own opinion about Mike Kojima, but you are accurate in that bearing clearances do have an effect on post filter oil pressures.
 

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bspeed said:
Hey guy, don't come in here with your 4 posts and a bad attitude. If you see this or someone else's setup with incorrect information, have the courtesy to address them like an adult in the first place. This isn't Honda-Tech so don't talk to people like they are in anyway inferior to you.

I have my own opinion about Mike Kojima, but you are accurate in that bearing clearances do have an effect on post filter oil pressures.
But there is a "known" issue with the output volume of OBD2 oil pumps

Bearing clearances or not
 

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SlodelSol said:
Do you understand what the bypass does? NOPE! Bypassing what? the filter? raising the pressure of the bypass opening means the oil WILL be filtered at higher perssures than stock. This mod does NOT change the oil pressure other than when the engine is used out of factory specs...or unless you don't change your oil filter as often as you should.The number one variable in oil pressure is bearing tolerances. Don't belive me? Read a couple books on engine building...Mike Kojima's book will tell you alot. You guys that say things on here that know NOTHING PLEASE STFU. If you don't know what your talking about don't post, idiots.
READ A BOOK. Learn before you post shit that is moronic. PLEASE! You are helping no body and only making Honda owners look dumb. But that has been the trend for the last 10 years now....Honduh?=street racing idiots that don't know the difference between an anti-sway bar and a strut tower brace. Don't post if you know nothing, thizank you puhleeze drizive thru.
Maybe you should take your own advice and NOT post stuff if you dont know anything... you flamed transzex.. one of the most knowledgeable people on this forum.. he has taken apart and assembled more motors and trannies than you have probably seen.
 

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Slodelsol,
for the record, yes I'm still a "boon" (noob). However, inspite of how bad or incorrect this information MAY or MAY NOT be, we can still use it. I'd like to say I really enjoy this site, everyone is very calm and helpful. Plus almost NO one flames on others, so CALM down.

Anyways civic4ges has a nice point.
 
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Civic4ages, I don't dispute the y8 crap oil pump issue. I am also ALWAYS pleased to see a nicely documented DIY and give rep to all who write them(mcleod), even if I would not personally use some of them in practice.
I am solely perturbed that this guy (slodelsol) is running around starting fires on the board over nothing like some sort of a automotive engineering god
 

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bspeed said:
Civic4ages, I don't dispute the y8 crap oil pump issue. I am also ALWAYS pleased to see a nicely documented DIY and give rep to all who write them(mcleod), even if I would not personally use some of them in practice.
I am solely perturbed that this guy (slodelsol) is running around starting fires on the board over nothing like some sort of a automotive engineering god
No shit...fucking noob

I will be posting the ultimate DIY pump mod thread very very soon!
 
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bspeed said:
Hey guy, don't come in here with your 4 posts and a bad attitude. If you see this or someone else's setup with incorrect information, have the courtesy to address them like an adult in the first place. This isn't Honda-Tech so don't talk to people like they are in anyway inferior to you.

I have my own opinion about Mike Kojima, but you are accurate in that bearing clearances do have an effect on post filter oil pressures.
Yea well sorry if I came off as being so evil I had a few drinks that night and am sorry for being such a dick, but the guy took the time to post this how to and you guys start busting on him about "not sending oil through the filter" and it isn't true. as for my being a "noob" with my 4 posts, I am a noob here but not to cars. I have about 12 years experience working on cars, I have worked at a GM dealership, Meineke and a private repair shop. I know what I am talking about. Sorry about the flaming though.
 
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Slodelsol- You are new here, and your 12+ years experience will enrich our knowledge base. Just be cool to people like Synth said, this is one of the most relaxed Honda boards you will find on the net. Lets keep it that way. Your apology is appropriate and accepted.
 

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Slodelsol, explain then what happens to a small block chevy (GM) when the bypass opens?????


Since our motors will already supply 60-80 psi (10 psi per thousand rpm rule) just upping the oil pressure via the bypass spring will only cause the engine to harder to pump oil that is NOT needed.

Porting the oil pump housing to make it more efficent will yeild better and more safe results, along with a little more power.
 
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transzex said:
Slodelsol, explain then what happens to a small block chevy (GM) when the bypass opens?????
Oil pressure would drop momentarily and unfiltered oil would be pumped through the oil passages.
 

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bspeed said:
Slebidia and Zex this is what you are talking about correct?

http://www.theoldone.com/articles/d%5F-series%5Fengine%5Fbuilding%5Ftips/

There is a bunch of cool little tips and tricks with pictures in this article.
Definately a good write up, along with the information present in the Honda builders handbook.

my plan was to mod my pump prior to putting my engine in my car, however a knocking bearing and rod through the block with no back-up car changed this quickly. What I did not have time to do, is now forcing me to fix something I don't have time to fix!!!
 

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SlodelSol said:
Oil pressure would drop momentarily and unfiltered oil would be pumped through the oil passages.
Try all the time above 2000 rpm! The stock spring is THAT weak, unlike our Honda setups.
 
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