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General Category => General Discussion => Topic started by: ital4me on December 06, 2022, 10:28:27 AM

Title: crossover pipes
Post by: ital4me on December 06, 2022, 10:28:27 AM
Greetings, Anyone know if there is an issue with running two exhaust crossover pipes? I have a pair of racing megaphone mufflers with crossover under the trannie and another right below the alternator. If if I remember correctly I had some header pipes without the front crossover that I believe came with the mufflers. I was told at the time that it that the mufflers and straight header pipes were a factory racing item but I have no idea if that is true. They are nicely done. I had cut the reverse cone off the muffles and installed some Vance and Hines baffles, then welded the cones back on. They sound awesome.That was a long time ago and I cannot find the straight pipes, damn. Now I have two crossovers.

(https://i.ibb.co/16kw0zx/DSC09102.jpg) (https://ibb.co/16kw0zx)
Title: Re: crossover pipes
Post by: moto-uno on December 06, 2022, 10:57:48 AM
  I don't think the double xover pipes were a negative . Mine ran fine with them and the usual LaFranconis for mufflers .
  You can simply remove the one under the trans and simply install a straight or slightly angled pipe from an auto supplier.
  Peter
Title: Re: crossover pipes
Post by: Frenchfrog on December 06, 2022, 03:53:55 PM
I've ran both with no noticeable seat of the pants difference...that was with small internal dia downpipes though.
Title: Re: crossover pipes
Post by: Moparnut72 on December 07, 2022, 08:14:49 AM
I bought a R75/5 in 1970, a very early one. It had a cross over in front just below the timing cover if I remember correctly. Anyway it was up front. A few years later the Airheads had a second added below the transmission. I was told at the time why it was added but I don't remember why.
kk
Title: Re: crossover pipes
Post by: Groover on December 07, 2022, 01:21:55 PM
Turbo  :wink: