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| Air Leak at Gasket for BPS Crossover http://mudmotortalk.com/mmt_v2/viewtopic.php?f=2&t=70383 |
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| Author: | mudder [ Mon May 08, 2017 8:52 am ] |
| Post subject: | Air Leak at Gasket for BPS Crossover |
Noticed yesterday that if I put my hand where the muffler bolts to motor, there was a constant stream of air coming from the gasket. Air flow increases with throttle, obviously. Have had this muffler on here for about 6-7 years with no issues. Is there a quick fix or do I need to install a new gasket? Motor runs fine. How much does this affect performance? Could try and tighten the bolts up but with my luck I would break a bolt head off. Thanks, |
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| Author: | cb5331 [ Mon May 08, 2017 8:55 am ] |
| Post subject: | Re: Air Leak at Gasket for BPS Crossover |
You need to replace the gasket. Sent from my SM-T710 using Tapatalk |
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| Author: | mudder [ Mon May 08, 2017 8:59 am ] |
| Post subject: | Re: Air Leak at Gasket for BPS Crossover |
Thanks CB. How much does this affect performance? Imagine it affects compression?????? |
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| Author: | cb5331 [ Mon May 08, 2017 11:17 am ] |
| Post subject: | Re: Air Leak at Gasket for BPS Crossover |
Won't affect compression. Probably won't cause immediate performance problems. You don't want the cool air getting sucked back up in the engine. Sent from my SM-T710 using Tapatalk |
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| Author: | 50fps [ Mon May 08, 2017 12:24 pm ] |
| Post subject: | Re: Air Leak at Gasket for BPS Crossover |
Get yourself some soft copper that is slightly thicker than the stock gasket and make a pair of gaskets using a stock gasket for a template. It helps compensate for inconsistencies in head and exhaust flanges once tightened down. |
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| Author: | mudder [ Mon May 08, 2017 12:38 pm ] |
| Post subject: | Re: Air Leak at Gasket for BPS Crossover |
Thanks 50. Saw a thread on here to use this. Seem like thicker than the BPS ones. Any thoughts? |
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| Author: | 50fps [ Mon May 08, 2017 12:40 pm ] |
| Post subject: | Re: Air Leak at Gasket for BPS Crossover |
| Author: | Smoke [ Tue May 09, 2017 4:27 am ] |
| Post subject: | Re: Air Leak at Gasket for BPS Crossover |
Get the cb gaskets they are the best and at least 5 times as thick as stock and twice as thick as bps gaskets. I've reused them and still no leaks. You get 4 per package because they are for a vw engine. Best gaskets i've found. |
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| Author: | godvl [ Wed May 10, 2017 10:57 am ] |
| Post subject: | Re: Air Leak at Gasket for BPS Crossover |
Double check that it's not just the air from the fan that's blowing through there. I thought the same thing at first back when I built my motor tried different gaskets and come to find out it was air from the fan blowing through the shields and out right there where the muffler bolts up |
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| Author: | godvl [ Wed May 10, 2017 11:01 am ] |
| Post subject: | Re: Air Leak at Gasket for BPS Crossover |
| Author: | mudder [ Thu May 11, 2017 8:17 am ] |
| Post subject: | Re: Air Leak at Gasket for BPS Crossover |
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