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  #1  
Old January 10th, 2016, 11:53 AM
Roverlab
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Trevor Griffiths
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Bigger engines

Anybody have any experiences with bigger displacement engines that are, still in the Rover family? Like a 4.8, 5.0, 5.2 from some of the UK Rover engine builders? We're trying to figure the best options for a d1 with manual trans, an interest in keeping it stock appearing, and not fragile or requiring premium.
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  #2  
Old January 10th, 2016, 11:55 AM
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Damn Trevor, the 4.6 was too much displacement already for that aged block design, 5.2??!
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Old January 10th, 2016, 12:29 PM
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I would stay away from any variant of the old Buick 215 (3.5, 3.9, 4.0, 4.2, 4.6).

I hear good options are 5.0 Ford or GM LS3.

Anyone know what transmission options have worked best?
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Old January 10th, 2016, 10:45 PM
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Just my opinion, but I wouldn't go past the 94mm bore of the 4.0/4.6 - the walls are too thin already! The 4.8 keeps this and just adds a longer stroke. The 5.0 bores it out to 96mm which sounds like a bad idea. Not sure on the 5.2


Keep in mind the R380 was originally only meant for a max of 380 Nm (280 ft lb) of torque so that may become your weak link. From Ashcroft's site, it sounds like you'd want a suffix L box from a post '99 vehicle for the best strength - assuming you can get a V8 version.
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Old January 10th, 2016, 10:49 PM
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I think Drew built Will Tillery a 5.0 or 5.2 for the 130 that vanished. You further stroke a 4.6
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Old January 11th, 2016, 12:19 AM
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Old January 12th, 2016, 08:39 PM
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I put ACR 4.8 Hi-Torque in my 110. Great motor!..
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Old January 13th, 2016, 07:41 AM
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David, I was going to reach out to you as well to see how things are going. I take it the Rover is back together and running well? Did you carb or fuel inject?
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Old January 13th, 2016, 08:58 AM
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Quote:
Originally Posted by Roverlab View Post
David, I was going to reach out to you as well to see how things are going. I take it the Rover is back together and running well? Did you carb or fuel inject?

I have ~2500 miles on the ACR 4.8 Hi-Torque, it's running great! It makes lots of low end torque. I am running a Edelbrock carburetor. ACR says it would make more power at higher rpm with EFI. The bottom end is good to 6,000 RPM per ACR. I highly recommend ACR.

I need to replace the shoot LT95 4 speed. The gearing is way to short on the highway. With the 4.8 you can start out in 2nd gear. Down the road I want to put in a rebuilt R380 5sp with a LT230 1.2.
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