XJS ( X27 ) 1975 - 1996 3.6 4.0 5.3 6.0

quad turbo XJS build

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  #101  
Old 03-02-2020, 04:43 PM
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WELL its 2020 nothing heard from, i guess its dead!
i did think it would never arrive, i said at 1st posts, 2014 .
 

Last edited by ronbros; 03-02-2020 at 04:45 PM.
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  #102  
Old 03-03-2020, 04:33 AM
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Figures. But... never stop dreaming.
 
  #103  
Old 03-03-2020, 01:40 PM
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Originally Posted by JagZilla
Thanks for pointing that out to me. I'm not sure how I missed that he's trying to get the CR down to 6.5:1. Like you, I'm not sure the 6.0 pistons will do it, because I haven't seen one, but, it stands to reason that the wrist pin would be located higher on the 6.0 to accommodate the added stroke. However, at the time he shot the photos of the turbos in place, it appeared that nothing had been done inside the motor.

That clean motor was posted by someone else, and was used in a boat.

Yeah, it's common to feed one turbo from another. The point I was making is that you don't use that approach unless you are planning on big boost, and have a way to deal with the big heat which results from it. I can't imagine where he'll put a W-2-A intercooler that's big enough to cool that charge.
You can take the early 7.8 -1 pistons used in America from 1972- 1980 to get workable pistons. But heated air from one turbo to another? No way!
Even if he uses alcohol which has plenty of cooling properties. That engine won’t tolerate that much heat. Plus if you
 
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