Whats up guys. Im getting ready to re-assemble my GSR with all the parts I have picked up in the past few months. This is my first build so any advice and criticism is welcome. Heres where im at so far.

99 GSR block and head stock crank and rods
81mm JDM ITR pistons and rings
Skunk2 Intake mani port match to tb and head
RMF narrow copy header
Blox stg2 cams
blox valvesprings
blox 68mm cast tb
crower steel retainers
supertech flat valves
buddy club 2 layer HG
arp headstuds and rod bolts
acl rod bearings/new honda mains

Im not sure on what injector size to get. It will be tuned on chrome and will be around 12:1 comp.As I said before this will be my first motor build. I am going to have a machine shop swap the pistons onto my rods and possibly port the head. But other than that Im looking for opinions of you guys that build motors all the time and have experience with some of these parts. Is there anything that throws a red flag up right now? Any hints and tips are greatly appreciated. This is going to be a street/auto x/ occasional drag car. I do plan on degreeing the cams and I have adj gears also. Let me know what you think.

 

You have a good combination of parts, your comp ratio will be closer to 11.5 than 12:1 but that's ideal for street and pump gas. You can use 310cc injectors or larger if you want since the tuning system will be able to adjust to whatever you use. Don't let the machine shop port the head unless Honda heads are something they port often and are familiar with as going wrong here will cost you power. There are other porting options available from people with Honda experience like CC cylinder heads etc.

The cams you're using are good but you don't need to degree them in if you'll be tuning them on the dyno for power. If you'll be doing a lot of street driving or auto X, you may want to consider upgrading to something like a Skunk pro 1 cam which has a lot more low end/mid range power and slightly more top end power than the Blox B's.

What kind of exhaust will you be using? intake?

Good luck with your build.

 

For the intake I was going to use a velocity stack with a k&n filter on 3" pipe and possibly make a box/ heat shield similar to the comptech setup.My exhaust is apexi ws2 catback and im going to run a test pipe since theres only about 7" between the header and the exhaust pipe.Im in upstate ny and loud exhaust is a big issue with local cops here but if it kills the possibility of power ill do what i gotta do. The car isnt my daily anymore but i still want it drivable.

 

in for this i was leaning twards the same style build but i was thinking an itr crank or sticking with the gsr, and either itr rods or gsr i wasnt sure. im just going to have the block hot tanked and honed no boring. as for cams i was thinkin either itr blox buddy club or skunk2 or maybe bc not to sure yet i dont need an agressive cam. im shooting for 200 hp as a goal and that be somewhat of a high goal in my eyes

 

I decided to do the full rebuild because the motor was running like crap.It left black soot all over the entire back end of my car even when completely stock. Before this rebuild my motor was 100% stock right down to the oe airbox and header heat sheild. It had 107k miles on it and was starting to have oil leaks as well as some oil consumption. When I took apart the motor I found heavy soot buildup on the exhaust side of the head and black sludge looking stuff on the intake side. There was also a buildup on the #3 valves of something that looked like rock salt but was tan/brown in color. The clinders look very healthy still with oem crosshatching but all the areas oil contacts alot was stained brown. I think the previous owner drove often and neglected regular oil changes. Im in the process of cleaning alot of the parts now so I can start re assembly soon as the bearings show up.

 

The reason I was estimating 12:1 is I been using the zealatuowerks.com compression calculator and with my grs block and head and p73 00 pistons it showed 11.8:1 And I'm using flat valves that are said to bump the compression from between .3 to .5 and where I live is about 500ft above sea level at its highest. Maybe there calculator is wrong?

 

i was planning a rebuild cuz i had bad luck once with a b16 i just dropped in so im rebuilding before i swap make sure it runs right

 

Im still interested in what epople think of this build... Anyones $.02 is appreciated

 

sceems like a nice build if the person befor you didnt do oil changes make sure your valve seals and when you reassembel (scense your not reboring) that your piston to wall clearence is where u desire it to be

 

the b16 is a LONG story, and ive been told and also read on here that itr pistons will fit in the gsr w.o any moding to the cylinders and idk if i stated above but im replacing everything in the motor every seal ring plug gasket....you name it im replacing it

 

I have all new valve seals and will likely get guides done also. I have measured the bore and the clearence is within spec listed in my helms manual.

 

From all the homework i did before buying my parts, Yes the itr pistons fit without modding cylinders, but a simple hone is always recommended. The only thing Im not going to do at home is pressing out the wrist pins from the rods. Its a real tight fit and im going to let the pros handle that since i dont want to bend a rod or damage the bushing in the process.

 

you replacing your rod bolts.? im curious.?

 

Yes, rod bolts will be replaced, also valvesprings and retainers. I plan on having the motor capable of 9000 rpm but I may not need to rev that high depending on the tune.

 

reliable with power.!! gOtta love a honda.! ehehe.. :D

 

yup. Thats the plan

 

the thing now im wondering is which rod, gsr itr or an outside company like eagle, also has anyone ever used or heard of these pistons? (http://www.inlinefour.com/spoonsporbal.html) ? just a thought one these. either that or usdm r pistons or jdm im still trying to deside.

 

It depends how much money you want to spend. GSR rods will work, but if you want it to be super strong you could go with eagle rods and cp pistons or something like that. The pistons in that link are honda jdm itr pistons that have been balanced. If you want less expensive reliable power go with gsr rods and itr pistons. Same reliability as honda OEM.