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4.0 with 3.5heads and EFI?

Tech Talk for Rover owners.

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4.0 with 3.5heads and EFI?

Post by RUFF »

Ok i have been offered a brand new 4.0 short motor at a reasonable price to replace my 3.5 bottom end with a snapped crank.

Has anyone fitted the 3.5heads and Flap style EFI to the 4.0 bottom end?
Are there any problems im going to have? Will it all bolt straight on?
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Contact 77Rangie

Post by 77Rangie »

I know the heads of a carby 3.5 fit, you just leave out one row of head bolts on the outside, i had to modify the a/c bracket for the side main bolt, and there's a dowl in the crank that wasn't in my fly wheel, but that was about it.
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Post by RUFF »

So you have done this? How does it run? Is it an improvement in power or economy?
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Post by 77Rangie »

Started the car for the first time last night, so haven't really had a chance to drive it yet. There's a problem with the new clutch so it'll be after the weekend before i get that sorted out. Apart from an exhaust leak and a few other little things it seems good.
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Post by peter r »

Peter
Last edited by peter r on Thu May 03, 2007 11:02 pm, edited 1 time in total.
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Post by Bush65 »

I put a 4.6 short motor in my 84 rangie a few years ago. I used the 3.5 heads.

Can't really add much to what Peter said. I made the mistake of not drilling the block for the breather at the back and had to fit a drop out box for the breathers from the rocker covers.
John
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3.5 to 4ltr

Post by Loanrangie »

So what is a reasonable price for a 4ltr short block ? Peter, is your 85' an auto with the torque flite ? , how does it go now ?

thanks,
Nick.
Saddle up tonto, its the not so loanrangie! . 98 TDI DISCO lightly modded with more to come.
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Re: 3.5 to 4ltr

Post by RUFF »

Loanrangie wrote:So what is a reasonable price for a 4ltr short block ?

thanks,
Nick.


$2000 for a brand new short block from torak tractors. But i ended up buying a complete early disco 3.5efi with ZF and LT230 for the same money.
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Post by peter r »

Peter.
Last edited by peter r on Thu May 03, 2007 11:03 pm, edited 1 time in total.
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4ltr

Post by Loanrangie »

That sounds like what i need to get the t/f going!

thanks,
Nick.
Saddle up tonto, its the not so loanrangie! . 98 TDI DISCO lightly modded with more to come.
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