sorry for the repost.
well i just bought a b18b1 head for a 100 bucks.i think i got a good deal, comes complete with valves, springs, cams(although crower 403’s are on the way). this is after i got a hp racing header for my b18a. my question is will this aftermarket header fit the b18b? or will i have to get another one?
second question is what are some good aftermarket pistons and rods? would ITR pistons be bad? could they be used with out any probs?10.6:1 compression
thanks
Re: b18b1 head, header question
Originally posted by B18Ateg
[B]sorry for the repost.
well i just bought a b18b1 head for a 100 bucks.i think i got a good deal, comes complete with valves, springs, cams(although crower 403’s are on the way). this is after i got a hp racing header for my b18a. my question is will this aftermarket header fit the b18b? or will i have to get another one?
second question is what are some good aftermarket pistons and rods? would ITR pistons be bad? could they be used with out any probs?10.6:1 compression
thanks [/B]
im almost done putting on a 95 head. ya its pretty identical except for the cams (vs 90-91) so if it fits b18a itll mount fine.
dont know much about pistons and rods… how about itr and eagle?
yeah mines a 93, good to hear. didnt want the hassle of returning and getting a new header. for rods i was thinking crower? and i wanna do the ITR’s but dont know if it will work fine.
oh the b18b’s from a 95 also
your header will work fine. all b series engines have the same exhaust manifold port setup… thus any b series header will bolt to any b series head.
itr pistons would be good. but realize that, just because they yeild 10.6:1 compression in the b18c5 (usdm itr pistons), they DO NOT yeild the same compression in a different engine. Its vital that you remember this, or you could end up with a compression much lower or higher than you would like.
here is how it stacks up:
usdm itr pistons in a b18a: 10.3:1
jdm itr pistons in a b18a: 10.8:1
and remember that if you put any b18c or b16b pistons in your b18a you’ll have to have the rods shaved (approx 1mm on each side) for the pistons to fit properly.
another option would be to use some b16a or b17a pistons, which don’t require that the rods be shaved (thus saving you $$)
here is how they stack up:
89-91 jdm b16a or any year usdm b16a pistons (pr3) in a b18a: 10.8:1 (slightly higher than jdm itr’s)
92+ jdm b16a pistons (p30): 11:1
b17a pistons (p61): 9.7:1
for any future compression questions please consult c-speedracing.com
I’d suggest going with the pr3’s or p30’s. They should cost the same or less than the itr’s, plus they’ll save you money because you won’t have to shave the rods.
Are you going turbo (or nos)? are you planning on reving really high(do you want a real monster of a motor?)? If you don’t plan on doing either of those then the stock rods will be fine, but it would be a good idea to have them shot peened.
XDEep:
im almost done putting on a 95 head. ya its pretty identical except for the cams (vs 90-91)
the b18b heads actually have larger ports in it than the b18a head. That doesn’t affect how it’ll bolt up, but its good to know.
actually im planning on going with nitrous.
what if i use ITR pistons with ITR rods? will it work without shaving?
Originally posted by 91IntegGS
[B]XDEep:
the b18b heads actually have larger ports in it than the b18a head. That doesn’t affect how it’ll bolt up, but its good to know. [/B]
sweet not only did i not even know it was a 95, but i got mine for $50 complete hehe =P
btw, i can get a 92-93 intake manifold for like 50. should i? theres no way i can afford the skunk2 and i dont plan to save that much for it either. i plan to get a chikara ts header eventually.
or instead of a 92-93 b18a intake, how about i look for a b18b manifold to match?
Originally posted by B18Ateg
what if i use ITR pistons with ITR rods? will it work without shaving?
itr rods will not work in your b18a. They are the wrong length. Plus, itr rods will be more expensive than shotpeenging/shaving the stock rods.
you need to do some more research about nitrous. Find out how much you want to squeez, and what a safe compression is for that (take into account the fact that oem pistons are cast). If you want to squeeze a lot and be reliable, it would probably be a good idea to get some forged pistons… i’m pretty sure they’re better for NOS if you’re squeezing a lot. But like i said, you need to do some more research before you go out and buy some itr’s.
Originally posted by XDEep
[B]
sweet not only did i not even know it was a 95, but i got mine for $50 complete hehe =P
btw, i can get a 92-93 intake manifold for like 50. should i? theres no way i can afford the skunk2 and i dont plan to save that much for it either. i plan to get a chikara ts header eventually.
or instead of a 92-93 b18a intake, how about i look for a b18b manifold to match? [/B]
it’d be a good idea to pick up the 92-93 intake manifold, but see if you can get it a little cheaper. But yeah, it flows better than yor 90-91 and is worth upgrading to. You can squeeze probably 2hp out of the switch.
don’t get an oem exhaust manifold. The 92-93’s and 94+'s will bolt up to the head, but won’t fit up to your exhaust, plus the 02 sensor will be in the wrong place. Just get a good aftermarket header for a 90-91 teg. It will bolt up just fine without any modifications and will retain the stock 02 sensor location.
You can expect probably no less than a 15bhp increase if you swap on a b18b head, 92-93 intake manifold and aftermarket header. Personally i think that those parts is one of the best ways to start modding your 90-91 engine, for about the same price as an exhaust system (which will get you 2-5hp), you can get all these other things and bolt on way more power. Of course some of the parts are sort of a waste if you plan on things like cams and a skunk2 intake manifold.
Hey Colin, is the 1994 intake mani different than the 1992-93 in terms of flow? I know they look different…
Originally posted by E-DA9
Hey Colin, is the 1994 intake mani different than the 1992-93 in terms of flow? I know they look different…
i wish i knew max. I was under the impression that the 92+ manifolds were all the same (or at least in how they flow).
there is that 2hp difference from 93 to 94, and i’d been told it was due to the larger ports. But i guess it could also be due to a better flowing intake manifold.
since you know they look different, i’ll assume you’ve seen them side by side? was it mainly external differences? or was it actual overall shape and design? it could be just that there are differences in vacuum ports and sensors and what not, but the inside could be the same? just an idea. like i said, i haven’t seen them to be able to see the differences.
itr rods will not work in your b18a. They are the wrong length. Plus, itr rods will be more expensive than shotpeenging/shaving the stock rods.
thanks for the info, the only reason i asked was i could get some cheap. i really appreciate your help.
do you know any cast pistons that arent too expensive?
whoops i meant forged.
Originally posted by 91IntegGS
[B]
i wish i knew max. I was under the impression that the 92+ manifolds were all the same (or at least in how they flow).
there is that 2hp difference from 93 to 94, and i’d been told it was due to the larger ports. But i guess it could also be due to a better flowing intake manifold.
since you know they look different, i’ll assume you’ve seen them side by side? was it mainly external differences? or was it actual overall shape and design? it could be just that there are differences in vacuum ports and sensors and what not, but the inside could be the same? just an idea. like i said, i haven’t seen them to be able to see the differences. [/B]
will 94+ b18b manifold bolt on w/o modifcation?
Originally posted by XDEep
i plan to get a chikara ts header eventually.
no good. my friend had a chikara, and first of all, the quality looks like sh*t compared to a DC or Neuspeed. Then it doesn’t really fit nicely, and rattles a lot. You lose a lot of top end power, so once you get to higher revs, you lost power. Sure you gain some on the low end, but it’s really not worth it. My friend took his chikara ts out a month after he got it. Anyway, just my .02. Don’t get the chikara ts, waste of money, waste of time, you’ll regret it. go for the DC Sport, i doubt anyone has real any harsh complaints about the dc.
and yeah, my friend has a b18b head on his b18a block and everything clicks in perfectly.