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Wastegate pipe

What effect on sound and performance would replacing my stock WG pipe (has the muffler/can) with just a pipe? Would I be able to hear the WG open better?
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Tim
1986 930
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Old 02-16-2007, 11:40 AM
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My understanding is that performance wise, it will help to prevent overboost situations since it can immediately evacuate boost when open. Mine sounds like an F 14 when it opens. (Cool in tunnels)

JP
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Old 02-16-2007, 12:02 PM
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Re: Wastegate pipe

Quote:
Originally posted by timc
What effect on sound and performance would replacing my stock WG pipe (has the muffler/can) with just a pipe? Would I be able to hear the WG open better?
Depends on on how loud your regular exhaust is. I have an open pipe on my wastegate and can't hear it open ... 'Course I also can't hear the radio, tire noise, police sirens or de-orbiting space stations. I may need to have my hearing checked or look into slightly more muffling in my muffler so I can enjoy the wastegate more.
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Old 02-16-2007, 12:43 PM
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Running a stock euro muffler, no cat.
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Tim
1986 930
Gone:71,2,4 914's, 70T, 71T(RS),77S
Old 02-16-2007, 12:58 PM
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It will sound awesome and as stated it will help you maintain a accurate boost level.
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Old 02-16-2007, 01:10 PM
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Found a monty from AASE for $80.00. I did not find one from our host... I'll post a WTB in the For Sale forum and see what comes up. Any other recommendations?

http://www.aasesales.com/monmwg0119tu.html
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1986 930
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Old 02-16-2007, 01:16 PM
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i HAVE A SHORT 90 DUMP ALL STAINLESS 45 plus shipping or I will make you what you want new.. I have 100 new stainless flanges that just came in along with turbo flanges..
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Old 02-16-2007, 01:51 PM
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Open atmosphere Waste gate= wood
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Old 02-16-2007, 04:02 PM
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Dumping to atmo sounds absolutely fantasic! It's like a jet engine is back there
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Old 02-16-2007, 04:47 PM
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OK, I'm convinced. I am ready to buy and install....NOW!

Thanks for all the responses...

tim.
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Old 02-16-2007, 06:37 PM
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I went to exhaust shop and got them to cut off the pipe and muffler and weld a straight through to the same flange in a larger diameter. $40 and fifteen minutes later what a noise, lol
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Old 02-16-2007, 06:53 PM
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Its not how big your pipe is...its how you use it!!!



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Old 02-17-2007, 06:07 AM
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Does the length of the WG pipe make a difference?
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Tim
1986 930
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Old 02-17-2007, 07:53 AM
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Sound?

PSSSSSSHHHH under boost - loud.
I have this setup.
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Old 02-17-2007, 08:12 AM
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The length of the wastegate pipe and the location of the outlet both make a difference in the sound level.
Mine is about 8" long and has a 90* bend at the end pointing it toward the ground. With a stock Euro muffler there is a marked transition from the growl of an excellerating engine to "the gates of hell" opening up when boost hits. Loud when you want it to be.
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'78 911SC Widebody, 930 engine, 915 Tranny, K27, SC Cams, RL8 Headers & GT3 Muffler. 350whp @ 0.75bar
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Old 02-17-2007, 11:52 AM
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Ben:

If you can fabricate a w/g pipe similar to the Monty style as noted in an above post, I'll order from you.
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Old 02-17-2007, 02:18 PM
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Quote:
Originally posted by William930t
Ben:

If you can fabricate a w/g pipe similar to the Monty style as noted in an above post, I'll order from you.
I can do that. like I said I now have 100 turbo flanges and 100 wastegate flanges 3/8ths thick stainless.. I expect to have regular production ones for pelican very very shortly. but if you want to be test folks email me at ben@mkexhaust.com
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Old 02-17-2007, 03:11 PM
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Ben, Sent you an email and PM....
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1986 930
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Old 02-17-2007, 05:45 PM
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Ben - I'll test your wastegate dump nub as well.
Thanks.
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'78 911SC Widebody, 930 engine, 915 Tranny, K27, SC Cams, RL8 Headers & GT3 Muffler. 350whp @ 0.75bar
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Old 02-17-2007, 05:52 PM
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Quote:
Originally posted by RarlyL8
Ben - I'll test your wastegate dump nub as well.
Thanks.
ok it will go out with your other stuff..

everyone else that contacted me has been replied to
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Current project 73 914-6 Gt project rusteration 2.4

*Reproduction 914-6 oil tank source* 2623647426
Old 02-18-2007, 04:05 AM
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