p_diesel Posted July 15, 2006 Share Posted July 15, 2006 wat up! im back i've finally found out what was wrong with my idle problem i had brought up a while back....ive had i guy look at my prelude and we've dicoverd that my compression is low for my cylinders...the first 1 was 150 the 2 was 130 the 3 was 130 and the 4 was 165 is that good or bad....and what should the compression be for the 97 prelude sh/h22a????? should i replace the valve thats low or replace all the valves????? is there any places that can rebuild or u can buy built heads??any suggestions would be apreciated! Link to comment Share on other sites More sharing options...
cranny Posted July 15, 2006 Share Posted July 15, 2006 165 across the board would be nice. if you only getting 130 out of 2 cyl. , its time to powder her nose i think , lol. Link to comment Share on other sites More sharing options...
b16bhonda Posted July 17, 2006 Share Posted July 17, 2006 ha...awesome metaphor cranny. i agree Link to comment Share on other sites More sharing options...
SexyH22 Posted July 17, 2006 Share Posted July 17, 2006 thats pretty bad. more important than high numbers is consistancy. so if its like 130 all the way accross your prolly ok, but yeah something is wrong. Link to comment Share on other sites More sharing options...
cranny Posted July 17, 2006 Share Posted July 17, 2006 if you read the manual(i dont know for sure just going by other manuals ive read for civics) , it will tell you what the service limit is for your compression rating. meaning how low it can get before engine will either not run or run with risk of making things much worse. 130 is way too low. by the way going by your compression test results id ay you got more than one bad valve. 2 cyl. got damaged valves it looks like to me. Link to comment Share on other sites More sharing options...
p_diesel Posted July 17, 2006 Author Share Posted July 17, 2006 if you read the manual(i dont know for sure just going by other manuals ive read for civics) , it will tell you what the service limit is for your compression rating. meaning how low it can get before engine will either not run or run with risk of making things much worse. 130 is way too low. by the way going by your compression test results id ay you got more than one bad valve. 2 cyl. got damaged valves it looks like to me. alright thanks for the post... do u know of any sites or companys that sell good built heads or should i just rebuild the one i have?? Link to comment Share on other sites More sharing options...
cranny Posted July 17, 2006 Share Posted July 17, 2006 your head is most likely fine as kind. new valves and seals and guides your back in business. and really you only need to replace the bent ones if you like. Link to comment Share on other sites More sharing options...
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