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Overhaul time?

 
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Old 08-14-2007, 10:39 PM
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Overhaul time?

As I am new to this forum, my question may already be out there, but I shall present it any way. It all started with the clasic head gasket failure on my 1990 Si. (B20A5 engine) As I was reading in another thread, it looked like someone may have used the wrong gasket in it. In any case, being the nosey inspector sort, I was looking over the cylinder bores and noted pitting in the aft side of the sleeves, the worst being in #2, though all have some. My guess the pitting was caused by corrosion as the car sat for some time before I got it. What I have not been able to find is a specification of how much the cylinders can be over bored to clean out the dammage. Or, if they need to be re-sleeved instead. My Chilton book does not seem to touch on that subject. I have been in aircraft too long to just ignore the issue and I rather want to have the car around for several years to come. So if you can give my thi info or point to a good web sight for it, I would be most grateful.
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Old 08-15-2007, 01:06 PM
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You nailed it on the spot, the pitting was caused by a faulty headgasket.
You can overbore to .020 or .040 if you please(b20a5).


Check out this site: http://www.importperformanceparts.ne...ts-honda2.html
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Old 08-16-2007, 07:13 AM
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Thank's Prelude13. next question, the sight you listed,
do they use OEM parts (in particular the head gasket)? I have heard that some of the aftermarket parts do not hold up as well, and I really don't want to do all this work again any time soon. I dont mind after market, I just want to have good parts.
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Old 08-20-2007, 09:19 PM
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Not sure as to the head gasket but I have heard of a certain coating that Honda used to coat some of their cylinder sleeves that might make it hard on rings. They say to go with Factory OEM parts there. I would say go OEM all the way. Better safe than sorry. Or if you can find a good brand (trusted) that is a metal gasket you may want to go that route.
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Old 08-20-2007, 10:05 PM
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Well, the block & head are now in the machine shop. hopefully, I will hear back soon as to what all is needed. Then I hope to get OEM parts all the way (as suggested) unless some one out there knows of an equal or better replacement.
For now, I have a big gapeing hole where an engine belongs.
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