 Any advice, megaphones |
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| vintage914racer |
 Aug 30 2004, 03:14 PM
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#1
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Member  Group: Members Posts: 429 Joined: 28-December 03 From: Minneapolis, MN Member No.: 1,473  |
So I have a set of megaphones for my 914-6 racecar and am wondering what to expect if I put them on. I know it will increase my low end torque a little and increase my high end, or thats at least what i have been told. Anyway, I am wondering if it is worth the time and money to put them back on and have my carbs rejetted for an upcoming race in September at Road America. Any advice or experience would be appreciated.
I purchased my megaphones from GPR and I believe they were built by George at European for them. Unfortunately they didn't sell a hanger and after several attempts to reach George I still do not have a hanger. Is there anywhere else I could look or has anyone built there own? |
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Replies(1 - 8)
| Joe Bob |
Aug 30 2004, 03:18 PM
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#2
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Retired admin, banned a few times Group: Members Posts: 17,427 Joined: 24-December 02 From: Boulder CO Member No.: 5 Region Association: None |
They will DECREASE the low end and marginally help the top end. Prepare to need heavy ear plugs, don't even THINK about driving it on the street.
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| vintage914racer |
Aug 30 2004, 03:21 PM
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#3
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Member Group: Members Posts: 429 Joined: 28-December 03 From: Minneapolis, MN Member No.: 1,473 |
The car is a dedicated track car (not street legal) so sound doesn't bother me.
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| Joe Bob |
Aug 30 2004, 03:24 PM
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#4
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Retired admin, banned a few times Group: Members Posts: 17,427 Joined: 24-December 02 From: Boulder CO Member No.: 5 Region Association: None |
Oh and if you use Georges' headers, he makes two lengths. One for a regular muffler and one for megaphones which are shorter....IF you have the longer ones...the standard 2.0 hanger will work.
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| seanery |
Aug 30 2004, 03:32 PM
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#5
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waiting to rebuild whitey! Group: Retired Admin Posts: 15,852 Joined: 7-January 03 From: Indy Member No.: 100 Region Association: None |
mikes right about the torque and hp.
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| Mueller |
Aug 30 2004, 03:36 PM
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#6
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914 Freak! Group: Members Posts: 17,146 Joined: 4-January 03 From: Antioch, CA Member No.: 87 Region Association: None 
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QUOTE The car is a dedicated track car (not street legal) so sound doesn't bother me. the sound might not bother you, but you need to check if any of the tracks you would go to have the same feelings (IMG:style_emoticons/default/smile.gif) we have a track out here that the intake sound can get you black flagged (IMG:style_emoticons/default/ar15.gif) |
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| i love porsche |
Aug 30 2004, 03:42 PM
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#7
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Senior Member Group: Members Posts: 1,547 Joined: 6-May 04 From: Nutley, NJ Member No.: 2,030 Region Association: North East States |
can someone explain to me why the carbs need to be adjusted with these?
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| lapuwali |
Aug 30 2004, 03:45 PM
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#8
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Not another one! Group: Benefactors Posts: 4,526 Joined: 1-March 04 From: San Mateo, CA Member No.: 1,743  |
A lot of tracks have a sound limit these days, and most of them have a sound level meter and check you in tech. Some clubs have a blanket limit regardless of the track, which they test for.
Laguna Seca is an extreme case due to its now being located within earshot of a number of high-priced houses (the track was there first, but that doesn't seem to matter). They have a meter running all the time at the edge of the track in a high load, uphill section (between Five and Six), where the car is likely to be at its loudest. At most events there, the limit is so low that even a pissed off small town cop wouldn't pull you over if you made that much noise. |
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| vintage914racer |
Aug 30 2004, 03:48 PM
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#9
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Member Group: Members Posts: 429 Joined: 28-December 03 From: Minneapolis, MN Member No.: 1,473 |
The tracks I am currently running do not have db limits and I would keep my current exhaust setup for those tracks with such limits. Originally this was a worry of mine and I was going to sell the megaphones I purchased, but all the guys I am running with have them.
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