GSR Build *190whp dreams*

B16, B18, B20
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GSR Build *190whp dreams*

By Greasedmonkey
- Tue Aug 18, 2009 2:15 am #138417 This will be my thread for my GSR motor I will be putting together for my hatchie. I do have a moderate power goal of 190 at the wheels. From what I have seen I should be able to get it.

Here are the specs of the build.

B18c1 Block
US ITR pistons
OEM water pump
OEM oil pump
New seals and bearings


B16a Head
Toda Spec B cams (cant seem to sell them, so I will use them.
Toda Valve springs and retainers

The head and block will be decked to get the trueness from both, but other wise be stock castings. Im not getting port work done to the head at this time. I dont feel it is nessecary to get the power I want. I just got the short block to the storage so that I can work on it. I will update with progress as it comes. I can tell you it will not be fast. Ive recently decided that I will be going K so, I dont know if this motor will go in or not.
Last edited by Greasedmonkey on Thu Aug 20, 2009 11:26 pm, edited 1 time in total.
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By 3kkl3sia
- Tue Aug 18, 2009 3:31 am #138423 the price youll pay for a k-series just build the c1. from what i have seen with half the money of a k you will have a b18 hatchie that will destroy k-series swapped ones.
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Re: GSR Build up.

By That One Dude
- Tue Aug 18, 2009 3:45 am #138427
Greasedmonkey wrote:Toda Spec B cams (cant seem to sell them, so I will use them.


Yeah, man. I tried to scrounge up the money, but with school and tickets, I can't exactly spare the cashola.

I priced out the TODA VTEC Killer kit and it's really not as expensive as I thought it was. Only like $1200-1300 directly from TODA depending on the exchange rate and plus shipping of course. I might have to run that route instead of the ENDYN Bumpstix.

GL with the build. What are you using for the IM? Stock GSR? Please say no... AEBS FTW if you go with a manifold. And how about the HG? 2 layer? 3 layer? How much are you having the head and block decked?

If you play your cards right, you might be able to eek out 200whp or just shy of it.
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By Greasedmonkey
- Tue Aug 18, 2009 4:08 pm #138543 i have a ported 1st gen skunk2 manifold. Im planning on using the stock 3 layer gasket. in all, id like to get .020 taken off or so. I have most everything I need to build the motor right now. I can get the short block done and ready for the head. Its the top end that will take a while. Toda parts are not cheap...

*edit, wit the milling spec'd, i will have to use a spoon, mugen or toda 2 layer gasket to get the CR i want out of the motor.
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By That One Dude
- Tue Aug 18, 2009 8:56 pm #138632 mmm...tasty...

Now is that .020mm or .020"? At .020" you're sitting at 11.6 on the dot. At .020mm you're at 11 on the dot. Not a HUGE difference, but it could be the difference between 175 and 190 after tuning.
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By Greasedmonkey
- Wed Aug 19, 2009 12:08 am #138671 inches actually. Id love for 11.5:1 if I could, but the thin gasket and that milling will give me close enough, with some wiggle room just incase.
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By That One Dude
- Wed Aug 19, 2009 2:55 am #138688 I used zealautowerks.com compression calculator to figure those numbers.

.020" is a pretty significant amount of milling. I'm hoping you will clay the engine before final assembly and startup.

Are you using the stock valves?
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By Greasedmonkey
- Wed Aug 19, 2009 4:35 pm #138804 stock head. nothing done to it other than cams and valve train.
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By That One Dude
- Wed Aug 19, 2009 8:03 pm #138843 Right on.
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By Greasedmonkey
- Thu Aug 20, 2009 11:28 pm #139048 I want to see what I can get out of as little work and money as possible. I might not mill the head at all and just find some JDM ITR pistons instead. Im not sure yet. I see great numbers coming from stock JDM ITRs with just headers and a tune. 190+ so I have hopes that with 11:1 either with the pistons I have and a thinner gasket or the JDM ones with either a thinner gasket or a stocker I can get my goals.
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By That One Dude
- Fri Aug 21, 2009 11:39 pm #139190 Thought about JDM CTR (P30) pistons? Slightly lower CR than the JDM ITR pistons, better for anti-detonation characterstics.

You're planning on using pump gas right? Y'all have 91 or 93 where you are? We have 93 :D
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By Greasedmonkey
- Sat Aug 22, 2009 12:13 am #139195
That One Dude wrote:Thought about JDM CTR (P30) pistons? Slightly lower CR than the JDM ITR pistons, better for anti-detonation characterstics.

You're planning on using pump gas right? Y'all have 91 or 93 where you are? We have 93 :D


CTR pistons are PCT, B16a ones are P30.

My main goal is to copy a jdm ITR, or if I cant get the jdm ITR pistons a US itr.

I had a set of CTR pistons on ITR rods, but these tough times forced me to sell them. Which I dont mind, I didnt want a dd with 12.7:1 CR. I know I can get 190whp with a 11:1 CR. I have three headers in mind I want to use. Just waiting to see which I can afford when that time comes.
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By That One Dude
- Sat Aug 22, 2009 12:22 am #139200 I meant P30 specifically.

Which headers are you looking at?
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By mistergou
- Sat Aug 22, 2009 7:18 pm #139295 good luck with your build :thumb:

its hard to break 200 whp n/a without REALLY breaking the bank...





Im still trying to break 200 whp myself, saving money now for new goodies :hehe:
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By Greasedmonkey
- Sun Aug 23, 2009 9:14 pm #139401
mistergou wrote:good luck with your build :thumb:

its hard to break 200 whp n/a without REALLY breaking the bank...





Im still trying to break 200 whp myself, saving money now for new goodies :hehe:


I dont expect to break 200. I want to hit 190. I know how hard it is, and with what I have i have seen it done.

The headers are the Hy-tech, RMF, and DTR/SSR. Ones like those.
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