1.5 To A 1.8

[Viper]

I have an 85 Honda CRX with a 1.5 that I race. A fellow racer has an 85 Prelude with a 1.8. The engines look very simular, except for the fact he has dual carbs.
My question is, do the two engines share the same block? Can I turn my 1.5 into a 1.8, and still pass it off as a 1.5? Is it just a matter of different crankshafts?
Anyone know?

 

[somethinwikd]

i h ave similar questions about the 85 crx. i am not new to the intg scene but this is the first crx i have decided to do... easy to build a gsr motor and drop it in my old teg... but here i sit with a motor noone makes parts for that i can find... what about getting parts to drop a b18 into it??? mainly mounts axles and hubs... i dont think the crx units will work...so where do i go to get the stuff i need... besides a lite car like this with a turbo gsr motor aught to scream...

 

[pills_PMD]

i'd be willing to bet money that the 1.5 and the 1.8 are not the same block at all.

what are the engine codes off both?

 

[Spoon-Hatch]

It would be better for you to drop in a true gsr and slap on a turbo.

 

[K2e2vin]

you trick people into racing you by changing displacement(they think you have 1.5L and you really have 1.8L). for a 1.5L to go to 1.8L you need a stroker kit and rebore it.

 

[whatdahieu]

hasport makes a motor mount kit with all the necessary components
the prelude is a b series but the bastard b series and the crx is the e series so no but you could swap a d series from a 86-89 teg

 

[sportlinecrx]

Originally posted by Viper@May 7 2003, 10:00 PM
I have an 85 Honda CRX with a 1.5 that I race. A fellow racer has an 85 Prelude with a 1.8. The engines look very simular, except for the fact he has dual carbs.
My question is, do the two engines share the same block? Can I turn my 1.5 into a 1.8, and still pass it off as a 1.5? Is it just a matter of different crankshafts?
Anyone know?

since a B16 is 103lb.s heavier than a D15, i'd say the B18 has a very different block than the D15....so IF you can get 1.8 liters out of your D15, then you can still pass it off as a 1.5 and blow everyone's mind