Re: [AMC-list] Breedlove's LSR attempt; trivia

[Frank Swygert <farna@xxxxxxx>]

Tom, that grainy photo of the engine is all I have. The only thing I can tell you for sure is it is a single turbo unit. The light colored part of the turbo in the front appears to be the compressor (air/fuel), dark section to the rear the impeller (exhaust). If there are six injectors it might have a Hillborn setup. Looks like just an air intake tube on the front of the turbo. No telling which block it is. 

I had something on the Indy rules at one time. They are different for normally aspirated and supercharged cars. Doesn't matter if super is mechanically driven or exhaust powered. The limit on those was 182 inches, or close to it -- and why yours is about the size. I don't recall the limit on normally aspirated engines. It was a time when Indy was trying to curb costs and get more manufacturer interest by using more stock components. There was a big stock-block push in the 70s, with an AMC block being used. Stock block was about it though -- almost anything else went! The AMC V-8 had a crank and cam that let it run like two in-line fours on the same crank rather than a typical V-8...

--------------
Date: Tue, 22 Dec 2009 10:53:57 -0800
From: tom jennings <tomj@xxxxxxx>

in AMC #13:

I'd heard that from some of the Navarro people: Navarro 'lent' one of his
turbo-ramblers to Breedlove for Bonneville. So apparently that's true.

There were TWO different turbo sixes:

* stock block, single turbo, 500 - 550 hp. Originally had a huge 5" Dellorto
carburetor, then shortly the Hillborn mech. FI.

* modified block, twin turbo, 700 - 750 hp, mechanical FI.
The major mod for this block was four bolt mains. Even the "stock" block had
mods to oiling, etc.

I've got one of the single turbo, stock two-bolt mains block. It is 182ci.

I can't figure out where or how to read the rules for Indy in those years
(67, 68, 69): for whatever class #50 was in, what were the displacement
limits?  I always assumed that the 182ci was for the Indy rules, but it
would be interesting if the motor I had was for the Bonneville car.

--
Frank Swygert
Publisher, "American Motors Cars" 
Magazine (AMC)
For all AMC enthusiasts
http://farna.home.att.net/AMC.html
(free download available!)

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