LEETR4A Posted November 22, 2015 Report Share Posted November 22, 2015 (edited) 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 November 23, 2015 by LEETR4A Quote Link to post Share on other sites
john 215 Posted November 29, 2015 Report Share Posted November 29, 2015 (edited) 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 onwards36D00001 R.R Disc efi Auto 9.35:1cr 1988 onwards37D00001 R.R Disc efi Man 8.13:1cr 1988 onwards38D00001 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 November 29, 2015 by john 215 Quote Link to post Share on other sites
TriumphV8 Posted November 29, 2015 Report Share Posted November 29, 2015 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. Quote Link to post Share on other sites
john.r.davies Posted November 29, 2015 Report Share Posted November 29, 2015 Over on Club Triumph, long thread about a V8 conversion: http://club.triumph.org.uk/cgi-bin/forum10/Blah.pl/Blah.pl?m-1327532445/s-78/highlight-TR8/#num78 John Quote Link to post Share on other sites
Nigel Triumph Posted November 29, 2015 Report Share Posted November 29, 2015 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 Quote Link to post Share on other sites
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