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Old August 27th, 2008, 02:11 PM   #1
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Greenbuggy's Avatar
Join Date: Jan 2005
Posts: 39
Default Soft trans mount for bus trans into IRS bug?

Alright, so on the neverending buggy project I've now gotten myself a ball-joint front end IRS bug chassis, a trans from a '74 bus and a 914 engine.

I bought, from a local guy a bugpack 6538-12IRS Bus Trans Adapter Mount Frontkit, as seen here:

It occured to me after buying it that A) it attaches to bus trans at mid-transmission, not at the front and B) it solidly mounts the trans to the chassis and C) it claims to be for a bugpack buggy chassis. My concerns are (accordingly):

A/B) how much vibration/harshness am I going to have to put up with for welding this to the bug chassis and C) will this fit the bug chassis without too much chopping?

Also, does anyone offer a bus-into-bug transmission mount kit that uses rubber or urethane mounts? I want to know before I weld in this solid mount kit

I found this kit: but it looks like it is also a solid-mount kit
<a href=\'\' target=\'_blank\'>Speedy Old Truck Dot Com![/url]
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Old August 27th, 2008, 02:54 PM   #2
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Join Date: Jun 2004
Location: Havre de Grace, MD
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Default Re: Soft trans mount for bus trans into IRS bug?

There is a bolt in kit as well. I can't say I've ever seen anothersoft mount one, but that doesn't mean they don't exist. I'd search bus to type 1 on hte samba, it comes up with about a million threads on the subject since it's been done for as long as they have made type II trannys. Gene Berg also makes an adapter for a bus tranny that allows you to use a type 1 nose cone and avoid using a linkage to the shifter. Or you can use a 10 degree mount that does the same thing but it is a solid mount.Then there is the shorter axles you need and you have to make the choice which way to go with the unversal joints. type 1, type II or type IV/944/930. Type I and type II are splined the same, type IV and the porsche are the same but different than the type I/II splines. Have you found a cheap option for the shorte axles needed to stay with the stock IRS trailing arms and type 1 stub axles?
I'm wondering if a combination of the berg adapter if you can get your hands on one, and a modified stock bus mount might just get you there. Buggy guys will tell you just to hard mount it though, then there is no worry about breaking the nosecone.

That swap always ends up being either expensive or a pain in the ass and usually both.
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