RB30 Facts, Figures and Helpful Hints

[mudnut]

Hey RB30 crew - following on from this post by @mudnut, I'm after a photo of the metal shroud on the exhaust manifold, part of the pre-heat assembly which came stock.

My Patrol hasn't got one (must have been removed by the previous owner), and with the cold weather performance getting worse and worse as the years go on, I've finally decided to fab one myself.

I'd appreciate a few detailed photos showing what it looks like, especially how it's bolted on to the body.

I'm going to have a crack with 1100 aluminium sheeting, if that melts then I'll think of something else. Cheers !

G'day. Sorry for the tardy reply. I have had to modify the heat shield to fit over the headers. An upside down tray with one edge cut off should work. Just use a holesaw to cut a hole and fit an appropriately sized upright pipe a couple of inches to the rear of the filter housing inlet. Most auto shops sell the flexible aluminium ducting you need to pipe hot air into the inlet.

I used U bolts to secure the collector onto the header pipes. From memory there are mounting holes in the factory manifold.

I also have two small sections of hose to fit the diaphragm. One has a small ball bearing forced inside, and is identified with a small blue cable tie. I use that on to stop the diaphragm from operating in warmer weather or on long trips.

When it gets cold I swap out the hoses so the carby warms up faster. It saves a bunch of fuel , because the device on the filter housing seems to allow the hot air to operate too often.