Another Noob Needs Swap Info

[sexyrex]

Got an 1989 CRX Si. Seafoamed the intake manifold/combustion chamber and now it makes a loud knocking noise. Possibly a valve train problem, im not sure, tried diagnosing it but to no avail, i can't rule out the problem... just a loud tapping/knocking around the top-end. And the clutch pedal also vibrates when depressed half way which didnt happen before the 'seafoam process'.

Anyways, i'm looking for a new engine preferably not a d16a6 motor. Maybe a step up, like a b18a1 motor. I need a thorough parts list and walkthough guide, not a "USE SEARCH BUTTON" or "GOOGLE THIS AND THAT" bullshit... I need to find all the information all from one place without looking at 2, 3, 4 sources for information, since it gets a bit confusing.

I've been reading the forums a bit, and it seems like the 90-91 b18s are the easiest to swap with minimal wiring. So to my understanding these parts would be required:

D16a6 parts used:
Distributor
Harness
ECU

B18a1 parts used:
engine
transmission
axles

Misc. parts used:
engine mounts

is this correct? also can i fabricate the mounts? do i have to pound the engine bay by the shock tower? swapping pulleys? or cables? etc.......thx in advance!

 

[jlicrx]

to install the LS OBD0 B18A1 in your Si - you need the B18A1 engine, B-series transmission, 90-93 Integra intermediate axle shaft, 90-93 Integra axles and the OBD0 Integra PR4 ECU - use the engine harness from the D16A6 - you need to purchase a B-series to EF mount kit and shift linkage from someone like Hasport, you can use the Si throttle and clutch cables - you will need to bash in the side of the frame rail on the driver's side to clear the alternator - you will need the transmission mount bracket that goes from the transmission to the mount on the chassis from 90-93 Integra - finding a B18A1 in "real good" condition is not that easy - most of them are used up and need rebuilt - before installing the engine, it is not a bad idea to get a new clutch kit, new timing belt, new water pump, new front and rear crankshaft seals and a new oil pan gasket - you will also need little items, like hoses, oil, oil filter, coolant, spark plugs, etc.

 

[sexyrex]

thx for the information. i am in real need of an engine. the connecting rod broke less than an hour ago, cutting a gapping hole right around cylinder #1. before that, i performed a compression test - 1-180 2-180 3-180 4-120, and than a leak-down test, turns out air was escaping through the intake valves. 1 or 2 reasons could have caused this, hydro-lock or carbon bending the valves after being seafoamed. So take caution with seafoam or other decarbonizing fluids, follow the directions....1/3 not a whole can.....

but, sounds like i need a whole 2nd gen teg to work with. any straight drop-ins for the CRX or should i just stick with a d16a6 motor?

 

[reikoshea]

d16a6 or b18a would be your best bets with the rex

btw, it does sound like the seafoam hydro locked. you already mentioned it, but you should only use 1/3 of a can in the intake...any more than that can potentially hydro lock the engine.