B20 Crank ?

If I put a b20 crank with stock b20 rob and pistons in a gsr would that help tq or hp or nothing at all

*rods

not sure if that can happen.... why dont you use the b18 crank and rods and get higher comp pistons?

b20 crank has more stroke right ?

You could do it but....there will be alot more vibration in the sleeve than if you had a b18 crank in there. If you only revved to like 5 grand then it would be ok but when revving up higher to 8-9 grand warping will start to occur, it already does on a stock motor but it will be even worse and the motor's life span will be pretty short.

thnx so it wouldn't help with tq ? it just will make me car shake like a lawn mower so what crank would help with gaining tq ?

If your gonna mess with internals might as well just get a stroker kit or get a b20 block and put the gsr head on it.

The B20B crank is exactly the same as a B18B crank. The rods are the saem as well to, the pistons however will not fit unless you bore that motor out to 84mm.
Basically the B20B crank will stroke the B18C1 to 89mm vs 87.2mm of the B18C1 stock.

Just use the B18B crank, but vibrations will occur...
huhmmm.... go to spoonsports.com they have balanced/blueprinted cranks or crower.com, like go for the knife edged cranks.

whtteg if the b18b-b20 crank being the same comment was directed toward me I meant b18c as in stock crank.

If not then lol ok.

where do the sell a stroker kit for a gsr motor

*they

whtteg if the b18b-b20 crank being the same comment was directed toward me I meant b18c as in stock crank.

If not then lol ok.

I was just giving some clearification, too many B18 comments with out specifing B18C or B18B :)



As for a stroker kit you can get one from Crower. I would stay away from this though, if you really want to increase the displacement then bore the B18C1 motor out to 84mm that will give you 1966cc as oposed to the 1797cc you have now, and you will keep your 1.58 R/S ;)

will that inprove tq or hp (I forget)

will that inprove tq or hp (I forget)

Yes

with one

with one

Huh :confused:

which one ? (sry)

which one ? (sry)


Oh, ok it will increase both TQ and HP.

sweet!!!! will it be safe to boost if bore to 84mm and should I keep the the compresson the same or drop or rasie it ?

84mm + Boost = bad combination. You need to dcide either boost or N/A. If you want 84mm and boost you will be spending some money on sleeves.

noooooooooo i think n/a would be better than turbo because there is no damn dyno place around here (upstate NY)

so what about cams ?

...there is no damn dyno place around here (upstate NY)
I'll have to look into it when I see my friend this week, but I know him and the guy who owns his house said something about knowing someone who just got a dyno, I believe it was somewhere near Rochester if I'm not mistaken. Or if you can wait till the end of summer the guy who owns my friends house (he's renting from I mean) is getting a 4wd dyno out here near Syracuse. This is supposed to happen, but I'm not positive exactly when. He was supposed to get it beginning of this past summer but is working on renovating his house and paying for parts for his EVO8. But I'll definently check on that other one that's up and running for you if you want me to.

Ok I looked around a little and found a post on a message board saying that this place: http://www.apgmotorsports.com/ is probably going to get a AWD dyno sometime in the spring. Your profile says Schenectady, so you're not far away from them, in Albany. This may have been what the guy I know was talking about. I get so damn confused with understanding people when they tell me something to do with Albany, Rochester, and Buffalo for some reason.

you can run 84mm on a turbo motor. but just keep in mind that the larger you bore the weaker hte sleevers come so less hp it will handle.

NA bores usually go up to 86mm bore

holy crap thanks for the sweet website CivicSpoon :icon16:. Hopefully they get a dyno. I was thinking about opening a shop around here because my friends say they need a dyno place and I love cars.

you can run 84mm on a turbo motor. but just keep in mind that the larger you bore the weaker hte sleevers come so less hp it will handle.

NA bores usually go up to 86mm bore

On stock sleeves I would go no further than 6psi maybe 8psi and that would be too risky for my liking. :2cents:

And running 86mm on stock sleeves is just asking for a cracked or broken cylinder wall. I would not go above 84.5-85mm on stock sleeves, after 85mm they get rather thin and weak, you will need some aftermarket sleeves. If it was a B16A maybe you could be alright but the B18A/B/C's all have a r/s of 1.54 for B18A/B and 1.58 for the B18C family, that is just too low of a r/s to run 86mm stock sleeves. :2cents:

oh my car right now has a d15b7 in it, the gsr is in the garage, it's winter so can't put it in right now too cold
It back fires like crazy when I first start it up, but when it warms up it stops, what the hell could it be

Where can i send my motor to get bored out, I don't think there is a maching shop around here

On stock sleeves I would go no further than 6psi maybe 8psi and that would be too risky for my liking. :2cents:

And running 86mm on stock sleeves is just asking for a cracked or broken cylinder wall. I would not go above 84.5-85mm on stock sleeves, after 85mm they get rather thin and weak, you will need some aftermarket sleeves. If it was a B16A maybe you could be alright but the B18A/B/C's all have a r/s of 1.54 for B18A/B and 1.58 for the B18C family, that is just too low of a r/s to run 86mm stock sleeves. :2cents:

my bad, when i was talking about boring, i was talking about aftermarket sleeves. sorry i didnt specify that.

on stock sleeves, dont bore more then 81.5mm. no way you can bore stock sleeves to 86mm. if you want a 86mm bore or a strong 84mm bore, you need to resleeve your motor. basically you get one rebuild and thats it. stock sleeves at 81mm have handled over 500whp, idk about b20 84mm sleeves but they are weaker.

Well with 84.5mm you will be alright with a N/A setup, as long as you do not stroke the motor any more. But for Boost or Nitrous you will need some iron ductile sleeves. And even at that I would not go past 84mm for a boost application that is going to be pushing anything over 12-15 psi. Also if you are thinking about getting the block sleeved then be sure to get "wet" sleeves not "dry". That is very important, if you get dry sleeves then you will be able to drive the car for about 1-3 minutes and then it will be over heating.

but if I put sleeves in wouldn't that negate the boring or what

well when you add sleeves it will be only 81mm, so if you want bigger then 81mm after sleeving, you need to bore the motor.

the thing was that if you keep you stock sleeves you shouldnt go over a .5mm bore on the stock size. thats why if you want max hp and have the money, sleeve the motor. but of course there are always other things you can do, boring a motor isnt the first thing you should do, unless you sleeve the motor

so what do you suggest be done ex: cams,headers....

what is your hp goal ? or how fast do you want to run ? answer this so we can better help you

I would like to hit at least 250hp