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V8 conversion questions


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Hi all

 

I will be starting a V8 conversion to my TR7 this winter and have a couple of initial questions.

I have acquired a 3.9 efi engine which has come from a TR7 that was dismantled and on looking at the engine number have found that the original number has been ground off and MGS1063 stamped in its place.

Does anyone know what this is as I presume it was done by an engine builder, but have had no luck in trying to trace it.

The second is, does anyone have any experience of BCC Brakes.

I spoke to them at the NEC about a brake upgrade and although they cover all other TRs they don't do a kit for the TR7, but I am currently in contact with them to see if they can devise one.

 

Thanks for any help

Lee

Edited by LEETR4A
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Hi Lee,

 

I would say the guy that put the engine together, can the previous owner shed any light on it ? Has it been ground off ? or a fresh stamping ? IF fresh then was a new block or been decked.

 

The info I have on 3.9 engine numbers are -

 

Factory 3.9 Litre Engines


47A00001 Morgan +8 9.35:1 CR EFI
37A40P0000 TVR Chimaera 9.8:1 EFI
47A40P0000 TVR Chimaera 9.8:1 EFI
30G00001 Land Rover Defender Japan 9.13:1 EFI
31G00001 Land Rover Defender 50LE 9.13:1 EFI
35D00001 R.R Disc efi Man 9.35:1cr 1988 onwards
36D00001 R.R Disc efi Auto 9.35:1cr 1988 onwards
37D00001 R.R Disc efi Man 8.13:1cr 1988 onwards
38D00001 R.R Disc efi Auto 8.13:1cr 1988 onward

 

 

As far as brakes, I too looked at BCC brake stand and they did look good, very similar to Hi Spec or Wilwood, be great if they can do a kit cheaper !

 

 

Cheers,

 

John

Edited by john 215
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As ROVER engines are old and the improvements are numerous

there is a great chance that inside the engine is something totally

different from what is stamped outside or expected.

 

Especially the cam and the liners of the bigger V8 are prone to fail

so that is improved often. A wilder cam allows or enforces higher compression.

Can best be done with other pistons or in limits with milling the heads what is a bit

difficult, because the manifold side must be treated, too.

 

When there is a new stamp the old might be milled off and that might be

an indication for flanged liners what is a pretty good upgrade.

 

From outside a Rover V8 can not be judged.

First good hint is the oil pressure at hot engine & idle.

 

When there is no dashpot or similar in use the bigger Rovers break like hell

when pedal is lifted and from that can live quite well with stock breakes if

somebody is not too hard on the breakes and uses the motor breake.

The engine itself is pretty lightweight and from that does not put additional stress on the breakes.

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There are plenty or options to upgrade the feeble standard brakes on the TR7. S&S can supply kits for vented front discs with 2 or 4 pot calipers and a range of disc sizes depending on your wheel diameter. They even offer a rear disc conversion.

 

http://www.ss-preparations.co.uk/

 

 

Nigel

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