Better breathing for the 6.5 Chev V8 donk

My Nissan patrol has a 6.5 naturally aspirated (some may say "asphyxiated".... hahaha) diesel motor. It's intake air was channelled via a Safari snorkel, then through some 3.5" wire-reinforced tubing, to a 8" diameter Donaldson air cleaner, then more 3.5" tubing into the intake chamber.

I decided that the asthmatic intake would benefit from having a 4" custom made (ie" home made) snorkel fitted, along with a larger Donaldson ram head.

I had to modify the inner guard so that the 4" tubing and associated rubber bends, could pass through via a much shorter route. I removed the Safari snorkel and set-about the task of MUCH enlargement of the oval shaped hole in the outer guard. A 5" angle grinder was used to cut-out a rough square shape (approximately 5" x 5") adjacent to the Donaldson air filter canister, which sits above the inner guard. This is where most Patrol owners mount their 2nd battery, but I have batteries 2 & 3 down the back in the cargo box.

I will see if my technical skills stretch far enough to me attaching a couple of photos of the job. The final photos won't be taken until tomorrow, cos it was nearly dark when I finished the fit-up today.

I took it for a test drive, but all the roads around here are really flat and I didn't have the camper trailer on, so it was difficult to tell whether she is breathing any better under load, but I could hear more induction "music" which I partially attribute to the freer flowing air intake.

New snorkel

Difference between Safari & Donaldson rams

Lower support bracket

Modifification to air box

Hope this might be of some interest to somebody....

Roachie

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There's only one thing more painful than learning from experience and that is NOT learning from experience! Member: My Profile  My Blog  Send Message