is it just me or...

[night]

is the 86-87 A20 dog a$$ slow compared to the 88-89.
i finally got the motor rebuilt on the 87 hatch beater and have 400+ miles on it. the thing just has no guts. the 89 motor in my lude pulled like mad compared to this.
its kinda disappointing and hard to get used to :(.

im pretty sure the weights are close and the gearing diff is negligable.
mine just turn out to be a weak motor or does anyone else think there is that much diff?


and btw, where is exactly does the 88-89 get its half point of compression from. i assume the piston is overall taller?, as they look identical in every other way.

[88turboaccord]

hmm.. weird problem.. How is the compression? How is the timing. I know you know your motors, just sounds strange. I know the 86-87 motors have lower compression, but the notice should not be that different

[Legend-H-88]

did you use the stock cam.... because the cam could just be worn out. might want to have the lobes micked. and yeah check the timing, and run a compression check. may have broke a ring when they installed the piston.

just something to think about....

[night]

it is the original cam, but the odds of it being 'worn out' are slim.
i did the rebuild myself in my driveway. it runs great other than a seeming lack of power. i guess i'll throw a compression guage on it when i get a chance. my 89 A20 always ran about 150-155.

[PhydeauX]

Wow, theres a pic of a prelude I haven't seen in a while. Yeah, the compression diference comes from the pistons. All the a20a pistons are dished, the 88-89 efi being the shallowest. There is also a diferent intake and exhust manifolds, 88-9s having the dual stage intake and the 4-2-1 exhaust, perhaps some tweaks to the ecm maps too. Its all supposed to add up to about 10hp. The hatch is a bit heavier then the lude too isn't it?

andy

[dXsquared]

wait a minute... your 89 Prelude has a B20A5 in it.. 160 HP... i would say thats why your accord feels slow compared to your Lude

Travis

[speedpenguin]

yeah you can't really compare a stock A-series to a stock B-series. it doesn't work out. A only beat B if A is modified (preferably with turbo)

[PhydeauX]

I his prelude is an 85 and i believe it has an 89 a20a3 in it. Its been a while night, any thing new happen to that lude?

andy

[night]

ya its an 85 with the 89 A20. used to be dual sidedraft.
and sadly no, i havent been able to do jack to it. i had to give up on my big B20vtec build. right now im just gonna toss the B20 in vanilla LS form in so i can get the thing running. then turbo later on. the intereior is completely stripped. hurts thinking about it now, but it was the thing to do for a fun weekend car. the a/c was never gonna work again and....hmm... i need to win the lottery.

anyway, i know about these motors (its a long standing curse apparently), this is just my first time seeing the pistons on the 86-87 and i just kinda expected more obvious diffs.

[AZmike]

My 86 prelude is noticeable faster than my 89 accord. The reduced weight and higher gearing more than make up for the small power difference.