Do most b20 motors have valve adjustment problems?
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Do most b20 motors have valve adjustment problems?
I have a USDM b20z motor 99 spec. After trying to adjust the valves to the proper specs I came across a problem. On cylinder 4, 3, and 1, the exhaust valves seem to be super tight. I can't even stick the filler gauge to adjust it even when its totally loosened. Seems like my springs are not compressed or something. Is this a common problem with these motors? Should I just replace the head?
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Re: Do most b20 motors have valve adjustment problems?
#7
Re: Do most b20 motors have valve adjustment problems?
yeah but its getting harder to find now.. I'll be lucky if I can find one with a decent price. For now maybe Ill just stick with a p75 head instead. I have a question, since the ls heads are almost identical to the b20 heads, is valve adjustment also required every 30,000 miles like the b20 heads that led me to failure?
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#8
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Re: Do most b20 motors have valve adjustment problems?
I have owned a couple of B20's over the years with no issues. That being said, valve adjustments are important, and history of service seems to make the difference in reliability on how the engines runs as it gets older.
I had an extra P8R head that i recently sold off.....they go for about $200 for those looking
I had an extra P8R head that i recently sold off.....they go for about $200 for those looking
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Re: Do most b20 motors have valve adjustment problems?
I still have a 99 crv that runs great with over 175k on the clock. These b20s valves "wear" different in the sense that the valves get tighter instead of looser in between adjustments. People that don't keep up with maintenance (specifically valve jobs for the b20) can run into problems. Valve adjustments at 30k intervals have worked so far for my crv.
Get the right tool though, I accidentally ordered the 10mm wrench/screwdriver valve adjustment tool when it really needed a 12.
Get the right tool though, I accidentally ordered the 10mm wrench/screwdriver valve adjustment tool when it really needed a 12.
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Re: Do most b20 motors have valve adjustment problems?
How about the ls heads? do I need to do valve adjustment every 30k miles like the b20 head? Im planning on using a ls head.
#11
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Re: Do most b20 motors have valve adjustment problems?
I would like opinions on this as well regarding the LS engines seeing as how thats what I am running. I did my last adjustment 15-20K miles ago and usually adjust them 2-3 times a year just to be safe(I drive a lot of freeway miles so she sees 3800-4000 RPMs for sustained periods with the GSR tranny). I didn't know the B20s had a problem such as what folks are describing. My Parents have a 98 CR-V. I adjusted the Valves on it a few years ago but it hasn't had one since(It mostly only gets drove on the weekends so it doesn't accumulate that many miles). Maybe I can get by there this weekend and adjust them again. The last thing my parents would need right now is to have to replace the Head/Engine in the CR-V.
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