Compression check doesn't look good... Thoughts?
02-16-2017, 10:06 PM
#21
Pro
Engine let out a puff of white smoke at Sebring last weekend. I limped the car back to the pits sputtering and by the time I got the pits the car wouldn't stay started and sounded horrible.
Just got around to doing a quick compression check. There was no bad metal on metal sound so I know I didn't drop a valve or anything. No milky oil.
Here are the results:
Front
100______115
80_______110
80_______120
110______N/A
I couldn't free the rear right plug, and didn't want to risk breaking it. I will pull the heads anyways, cause of the 80's on the left side. While I am there I can check for ring problems.
What say you?
Just got around to doing a quick compression check. There was no bad metal on metal sound so I know I didn't drop a valve or anything. No milky oil.
Here are the results:
Front
100______115
80_______110
80_______120
110______N/A
I couldn't free the rear right plug, and didn't want to risk breaking it. I will pull the heads anyways, cause of the 80's on the left side. While I am there I can check for ring problems.
What say you?
Another member saw your post and referred me. I'm looking for a trashed 243 head casting to flow test against a 317 casting to verify similarities/differences. I have the 317 - need the 243. When you get your ducks in a row let me know if you have a trashed 243 head as a result of this. Only need one intake and exhaust valve (actually don't have to have that) and at least one cylinder needs to be in condition to be flow tested. Again - sorry it happened. Thanks
02-18-2017, 12:45 AM
#22
Safety Car
I think you can bore it .020" but a re-sleeve is not a simple task on these. I would be looking for another block if you cant over-boar it. My '02 LS1 block is the same as the LS6 so I'm assuming the '01-04 LS1 and 6 blocks are the same if that helps. Doing the LS3 update may be a good option.
02-18-2017, 02:57 AM
#23
Safety Car
^I stand corrected. Only .010". Ouch!
It doesn't make much design since though. Here is an article on the topic.
http://www.hotrod.com/articles/max-o...for-ls-blocks/
It doesn't make much design since though. Here is an article on the topic.
http://www.hotrod.com/articles/max-o...for-ls-blocks/