108k miles on GSR, should i turbo?

I have a 95 GSR with 108,000 miles on it. I've never had any mechanical problems with the engine. I was wondering if boosting my car would be too harsh on the engine with this many miles. My plans were to find a cheap Greddy kit with an intercooler and run 7 psi. what do you guys think, thanks.

i wouldent say your miles are to high becasue a little over 100,000 miles on a honda motor is not bad, but i no of many gsr's that have shitty rings over 100,000 miles and alot of other little problems,i personaly would not do it i think it would be to risky,then again i have a freind who had a civic ex stock motor with 195,000 miles with a turbo boosting 5 pounds and just had minor problems here and there.but if you do have your motor checked by a person real familor with your engine, or just get it rebuilt.

Thank you for the input man. Rebuilding is pretty expensive, but i know i would have to put in a little work replacing some internals. any idea how much labor would be for some forged pistons and a new head gasket? Also, speaking of turbos, does anyone have a Greddy turbo or have an opinion about them. thanks.

If you get forged pistons get forged rods too. You should be good to go with those!

i would have it rebuild just to be safe. Better to do it now, than to turbo and maybe blow the engine, and have to get another engine.

Alright, thankyou guys. What other parts are necessary for the rebuild?

Well really the best things to get, especially since you are going to be running boost, is forged pistons, and rods, and a good headgasket. Really those would be the main things you would need. There is alot more you could get, and do, but those are the main ingredients.

sweet, thank you. any thoughts on the greddy turbo kit?

it's more of a kit for show.. don't get me wrong it'll still add quite a kick, but parting it together will be cheaper and add up to more hp gain.. if that's what you're looking for

Yea, going from 170-210hp for $2600 doesn't really seem worth it. Id like to go with a hybrid t3/t4 but what combination of turbine housing and compressor do you think i should go with. An increase of 80-100 hp with not too much lag would be awesome, but what combo would yield that power? thanks.

jut turbo it and if you blow the motor then rebuild it.
I have a friend with 180,000 on his motor that has been running 12 lbs of boost with a intercooled t3/t4 kit for 2 years and all he has done is replace the head gasket.

jut turbo it and if you blow the motor then rebuild it.
I have a friend with 180,000 on his motor that has been running 12 lbs of boost with a intercooled t3/t4 kit for 2 years and all he has done is replace the head gasket.

Is he running a ls motor, or a GSR. I could see that with a ls, but running that high of boost on a GSR motor with that kind of miles, even with a good tune is very unwise. Even on a new GSR with a good tune, that is a good ingredeant for f*cking up your motor. The headgasket will help but that is still very high boost for the stock block. I wouldn't suggesat running more than 8psi if you run it on the stock internals.

are you saying the higher compression of the GSR motor makes it more vulnerable to failure, compared to an LS?

ya, if you run to much boost on high compression you end up with risk of detonation. Even running on the best pump gas it is sketchy with the inconsistancy of gas. The ls comes with lower compression, and a stronger bottom, so you can run more boost without risk of detonation. Acturally you can run a higher compresson rate if you have the bottom is built, alot of racers run a higher c/r, but those are not streetable cars, they are full race! A lower compression rate is favorable for a streetable daily driven car. But ya the high compression rate of the gsr make is not able to handle as much boostas an ls, and more vulnurable to detonation if running too much boost!

so would it be a possibility to lower the compression of my motor?

if you're truly serious about turboing it then rebuild it first and if you do wanna buy a kit instead of parting one together look into rev hard instead of greddy.

and yes you can lower the compression of your motor, you would do that when you rebuild by putting lower compression pistons in or by putting a thicker head gasket in...

Yes all you would have to do is either put a thicker head gasket on, or change your pistons, or you could do both. One of the main reasons for detanation though is running the motor to lean. If you ran 10 lbs of boost on a gsr motor all you would have to do is upgrade your fuel system and get either an fmu or use an apexi afc. Just get the greddy kit with intercooler check out city-speed on ebay he sells it for $2689.00 which is a bargain. DO NOT run a turbo without an intercooler or you will be blowing your head gasket all the time.

If you do get new pistons get forged pistons, and since you are already down there you should get good forged rods as well. I would go with like a 9.0:1 or 9.4:1. That should be low enough. And yes running lean also creates a problem with detonation, but so does the inconsistancys of pump gas. Even with a fuel controller you cant account for those inconsistancies. This is why it would be better to lower your compression and get forged parts!

alright ill be checking out the possibilities for the rebuild, thanks a lot guys.

* dont listen to dc2 bountyinteg...."If you ran 10 lbs of boost on a gsr motor all you would have to do is upgrade your fuel system and get either an fmu or use an apexi afc."

hehe....you can listen to quote but I wouldnt recommend it...especially w/ 100000+ miles

hmm.. well money is definitely a factor, so right now im just considering running a very low boost without rebuilding the bottom end, or just buying a few NA bolt ons. I really can't afford rebuilding the motor right now, plus im only looking for like 240-250 whp. bounty integ, i dont think that greddy kit will get me even close to 250 whp will it?

I would get the rev hard kit over a greddy kit, as far as kits go they are both pretty good, but I hear that the rev hard produces a bit more power. And if you are looking for 250, you can get that running on 8 psi, which would not require any kind of bottom building. So if you run at 8 you will be ok with what you got. I would say run 6 around town, then crank it up to 8 when you want to race, or just for fun. I would say have your car tuned afterwards too, just to be on the safe side. Good luck, let us know what you do.

thanks a lot man, i think that is what ill be doing. I'll let you guys know how it goes.

i'm running 12 pounds on my gsr ...garrett t3/t4 turbo, spearco intecooler...inlinepro head gasket...greddy intercooler piping, hks wastegate, greddy type s blow off, RC 550 CC injectors,Rev hard manifold, GReddy TVVC boost controller, Blitz turbo timer, Apexi Super-AFC, i only have around 83k miles...and it's a 95...but it runs great...you could do 8 psi and i wouldn't see any problems...and i definately dont see any reason not to upgrade those internals...i'd do it sooner than later though...even if you dont turbo...i'd replace those internals...

not really unless you want to rebuild the engine. Also you were talking about the t3/t4. This is a good turbo for high end 1/4 times and such. but for street driving (0-60) a t3 with a .43 or something a/r should be better (less lag). Do a compression and leak down test at a garage and if your numbers are good you can turbo it at 6-7 psi with great reliability from what I here. I have been reading A LOT of forums and this is what i have picked up since i am turboing my LS for sure! have fun

so mackula all you did was replace the head gasket as far as new internals?

Ok well i did a compression test today and came up with 152, 153, 152, 160 psi. Let me know what you guys think, is this sufficient enough to add some boost? Thank you.

Nobody has any idea if those compression numbers look good? Please help.