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Old 01-19-2007, 03:00 PM   #11
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While I'm no expert. IIRC having no exhaust causes the valves to heat up and stop sealing properly.

Although..more thought about it.. with the stock manifolds.. you should be ok for a short period of time..#4 is pretty low restriction ....
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Old 01-19-2007, 04:12 PM   #12
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Quote:
Originally Posted by Bonneville94V688
95LHS, Too little or no Exhaust backpressure on a stock engine can cause severe damage to the valve train.
I don't buy it. Not meant as an insult, but this doesn't make much sense.

Could you elaborate?
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Old 01-19-2007, 05:26 PM   #13
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Quote:
Originally Posted by 95LHS
Quote:
Originally Posted by Bonneville94V688
95LHS, Too little or no Exhaust backpressure on a stock engine can cause severe damage to the valve train.
I don't buy it. Not meant as an insult, but this doesn't make much sense.

Could you elaborate?
Google can help.
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Old 01-19-2007, 05:56 PM   #14
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Quote:
Originally Posted by BillBoost37
Quote:
Originally Posted by 95LHS
Quote:
Originally Posted by Bonneville94V688
95LHS, Too little or no Exhaust backpressure on a stock engine can cause severe damage to the valve train.
I don't buy it. Not meant as an insult, but this doesn't make much sense.

Could you elaborate?
Google can help.
Great advice...let me show you what I found. I typed in "exhaust back pressure". Here are the first 3 related links:

http://www.nsxprime.com/FAQ/Miscella...austtheory.htm
http://www.uucmotorwerks.com/html_pr...torquemyth.htm
http://auto.howstuffworks.com/question172.htm
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Old 01-19-2007, 06:51 PM   #15
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So, your saying all those 3800 people who run open header at the track are messing up their engines?
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Old 01-19-2007, 08:44 PM   #16
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Please read closer.. I mentioned having no exhaust and that running the manifolds wouldn't be bad for a short time.

The article from How stuff works is suggesting headers.. The information I'm aware of is running no exhaust at all.
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Old 01-19-2007, 08:47 PM   #17
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Ohhh. My mistake.
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Old 01-19-2007, 10:40 PM   #18
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It was kinda dark out when I took this video, but we are looking for sound, not picture...


http://www.kc2jga.com/bonneville.wmv
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Old 01-20-2007, 01:14 AM   #19
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Hehehehe listen to her roar!
Niiice!
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Old 01-20-2007, 10:48 AM   #20
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WOW....makes me want to get an electric exhaust cut-out!!!
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