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Another Noob Needs Swap Info

Discussion in 'Civic and CRX - EF' started by sexyrex, Sep 4, 2006.

  1. sexyrex

    sexyrex New Member

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    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!
     
  2. jlicrx

    jlicrx Senior Member

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    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.
     
  3. sexyrex

    sexyrex New Member

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    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?
     
  4. reikoshea

    reikoshea HS Troll...And Mod Moderator VIP

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    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.
     
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