Thanks but I also said depending on hours since build.. Dumbass..
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| Author: | Jamie B. [ Tue Feb 09, 2010 2:08 pm ] |
| Post subject: | Compression Difference |
How much difference is allowed between each cylinder on a 35 briggs? I have one at 195 psi and the other at 165 is there something wrong with this? |
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| Author: | caddobrook [ Tue Feb 09, 2010 2:14 pm ] |
| Post subject: | Re: Compression Difference |
My understanding is that you want less than 10% difference between cylinders... So it sounds like you have a problem to me.. Also, that sounds kind of high.. I thought stock was in the neighborhood of 115psi... Did you mod this motor? But there are far smarter guys than me on here that can probably tell you a little more and give you some ideas on what to do... If not, I would call gecker and see what sheldon suggest you do. |
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| Author: | Jamie B. [ Tue Feb 09, 2010 2:15 pm ] |
| Post subject: | Re: Compression Difference |
The motor is modded with high performance cam. |
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| Author: | Gator Guy [ Tue Feb 09, 2010 3:05 pm ] |
| Post subject: | Re: Compression Difference |
| Author: | DMC [ Tue Feb 09, 2010 6:14 pm ] |
| Post subject: | Re: Compression Difference |
Do a leak down test on each cylinder and determine if its a valve, rings, or a head gasket leaking. |
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| Author: | Rail [ Tue Feb 09, 2010 7:40 pm ] |
| Post subject: | Re: Compression Difference |
Depending on how many hours are on the heads since they were worked and the engine was built, I would lean more to valve guides leaking.. Check for excess carbon build up.. Most head porters that do these engines don't think to replace the guides but they take plenty out around them.. |
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| Author: | Jamie B. [ Tue Feb 09, 2010 8:31 pm ] |
| Post subject: | Re: Compression Difference |
Guys thanks for the help sent heads to mechanic I know and valves where leaking. I had 175 hours on the heads since modded. |
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| Author: | bjg [ Tue Feb 09, 2010 11:16 pm ] |
| Post subject: | Re: Compression Difference |
| Author: | Rail [ Wed Feb 10, 2010 2:41 pm ] |
| Post subject: | Re: Compression Difference |
Thanks but I also said depending on hours since build.. Dumbass..
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| Author: | bjg [ Wed Feb 10, 2010 7:19 pm ] |
| Post subject: | Re: Compression Difference |
| Author: | craig [ Wed Feb 10, 2010 8:47 pm ] |
| Post subject: | Re: Compression Difference |
| Author: | grrifles [ Wed Feb 10, 2010 8:52 pm ] |
| Post subject: | Re: Compression Difference |
Well lets see here if the valve guide wears it will cause the valve to tilt causing the valve to not seat correctly. Especially when a lot of the guide has been removed from porting. But I could be wrong Chris |
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| Author: | bjg [ Wed Feb 10, 2010 11:47 pm ] |
| Post subject: | Re: Compression Difference |
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