Update(ed), weighed my subframe crossover options...

The Gas and Diesel Engines - VQ40De, VK56DE, YD25DDTi, V9X, Transmission, Transfer Case, Oil, Differentials, Axles, Exhaust...

Moderator: volvite

Science Abuse
Posts: 17
Joined: Thu Jun 11, 2015 4:13 am

Update(ed), weighed my subframe crossover options...

Postby Science Abuse » Tue May 26, 2020 9:21 am

Using the search function here, I was sort of surprised, sort of not, that I didn't see anyone trying custom exhausts.

I am not surprised that people shy away from this god awful rear sub frame arrangement. The questions:

-Has anyone been able to snake a bigger pipe through there?
-Does the V8 oem exhaust have a larger sub-frame crossover pipe, or do they have the same restriction?

I'm currently attempting to route a pair of 2" pipes through, but it's a real pain and I'm on the cusp of scrapping it. I've built a dozen exhausts from scratch, strange that my daily driver is the project that breaks my will. lol

Thanks in advance!


Science Abuse
Posts: 17
Joined: Thu Jun 11, 2015 4:13 am

Postby Science Abuse » Wed May 27, 2020 9:51 am

So, I had some success last night! The pair of 2.125" pipes fit with a min of .5" clearence on all sides.

There will be an extra long slip joint in both of these, a 2.00" pipe will slide in each to a depth of about 12", allowing lots of clamping area.

Now, if only my spare was mounted elsewhere, the rest would be easy...

https://photos.app.goo.gl/LBH5uFqn1CoAxPpm6

https://photos.app.goo.gl/7a2S9ApGX1qprv9E9

Flowmaster muffler:
https://photos.app.goo.gl/86xi5J7WeLS69JgbA

Krymdog
Posts: 15
Joined: Mon Jan 07, 2019 7:21 am
Location: Central Virginia

"If only my spare was mounted elsewhere"

Postby Krymdog » Thu May 28, 2020 9:46 am

Dude, I feel you.
There are no off the shelf rear swing-arm solutions for these. I get that is a function of demand, but I don't have welding skills, so I was hoping SOMEONE would make one.

If you find one, let me know.


Return to “R51 Engine, Driveline and Powertrain”

cron