ok so i just got my ls vtec built n broken in n now its time to have some fun with it. its a basic set up. usdm type r pistons on some stock ls rods (polished, shot peened, re sized at both ends etc...) n new rod bearings. the head is a bone stock gsr head. has all the bolt ons (i/h/e, skunk 2 intake manifold, bigger t.b., hondata gasket, adj cam gears). one of my concerns is just how far can i let it rev.....also, would i need to upgrade the valve train if i got a pair of type r cams? i dont think ill be taking it much past 8k. i just want some opinions. im lookin for more power, but in a streetable fashion (hence the type r cams). itl b dyno tuned later, but for now ill have it street tuned so i can drive it safely. anyone got some advise on this?? also is anyone sellin some type r cams?? thanks in advance yall!

 

Stock GSR valvetrain? Don't go past 8200.

 

i had an lsvtec with a little higher comp and i rev'd 8200 everyday beat on it pretty good and never had a problem with it at all..wasnt tuned or anything(was running really rich though)...not advisin this just lettin u know..if it was built properly theres no worry..arp rod bolts i presume u used? as long as they arent ls i dont see a problem

 

Type R cams > stock GSR head!

You should upgrade your valve springs and retainers! Also if your still running the stock gsr intake manifold you might want to looking into a single stage manifold for better gains with the R cams. After that you can look into upgrading your fuel system... walbro 255, maybe some injectors and a FPR then TUNE!!!

 

yea its got the arp rod bolts. im usin a skunk 2 manifold. i dont have money for the springs/retainers and i dont really have any intention of spinnin the motor past 8200 or 8300. im a poor college kid n this is my daily beater n i have to drive it from usf to land o lakes everyday. i just want a lil more punch. also, i was wondering if just usin a type r intake cam would make a difference. i kno it sounds wierd but i saw somewhere that there wasnt much difference in hp between the type r intake cam/gsr exhaust cam combo n usin both type r cams. i think it said it was only about 1 hp difference. i dont remember where i saw it tho. anyone had any experience with this???

 

with typeR pistons you should not need to rev it past 8K with a cam upgrade,i would just replace the inner springs with some nice portflow or itr i would not go with that 255 fuelpump

 

hmm... that is wierd. I never heard of any combo involving a stock gsr cam. I'm using a CTR and ITR combo on my B20/vtec... Supposedly its the best combo but I still havent made it to a dyno so I dont know nothing for sure myself.

 

yea i have to do a lil more research on it. its a common thing in modern dirt bikes to ONLY upgrade the intake cam. however there is no fuel injection on a dirt bike either. im still lookin into it, but if yall have any more advise it would b greatly appreciated. i dont plan on upgrading the fuel system unless its just the pressure regulator. the stock system should do just fine. im only hoping for 190 hp MAX to the wheels. i mite need the prelude injectors n a pressure regulator for that, but thats it. any other comments/advice would b appreciated! thanks all!

 

k did some research n this is what i learned. after air/fuel is burnt, it is less dense, and there is less of it since it has been burnt, therefor making it easier to get rid of than the air that is being taken in. this is why intake valves are always bigger than exhaust valves, and why you can get away with only upgrading the intake cam to gain hp (provinding the upgraded intake cam isnt too much bigger than the exhaust). it makes sense now that the ctr intake cam n the itr exhaust cam combo would b the best bc the ctr cam is slightly bigger than the itr. this would also explain what i mentioned before. the itr/gsr cam combo only made 1 extra hp than both itr cams bc its easier to let the air out than to take it in. the difference in hp between the itr/gsr combo and both type r cams is minimal bc the upgraded intake cam isnt much bigger than the exhaust cam. hope this made sence. it did to me. lemme know if yall have heard/read anything different. any more advice would b appreciated! thanks again.

 

2000+ itntegra type R cams has the same profile as civic type R cams. saying that you have a civic type R intake cam and a integra type R exhaust cam makes no difference. it makes no difference unless it is a lesser year integra then the difference will be in the intake cam profile.