roverman Art Gertz Winchester, CA. (3188 posts) Registered: 04/24/2009 11:02AM Main British Car: 74' Jensen Healy, 79 Huff. GT 1, 74 MGB Lotus 907,2L |
What if, Quad valve RV8 ? Not BMW
Suppose it DID happen, in 4-5L. form ? What class could it road race in ? Vintage something ? Does it truly belong in a Jensen Healey or a Jensen GT ? 5L should make 500 hp., no problem, with suitable road course torque/hp band. Four, 44mm IDF's-or ? Please share your skilled thoughts.Thanks, roverman.
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roverman Art Gertz Winchester, CA. (3188 posts) Registered: 04/24/2009 11:02AM Main British Car: 74' Jensen Healy, 79 Huff. GT 1, 74 MGB Lotus 907,2L |
Re: What if, Quad valve RV8 ? Update
A LOT needs to happen, for this build to be, successful. But... if it is, why not in a Jensen Healey ? The cam covers are already correct, only twice as many of them ? It would be lighter than a 6.1L hemi, with comparable power. All hail the mighty B cam(s) !
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Re: What if, Quad valve RV8 ? Not BMW
Suppose it DID happen, in 4-5L. form ?
Uh, it HAS happened? [en.wikipedia.org] Repco has done this in at least 3.0L, 4.2L, 4.3L and 5.0L |
roverman Art Gertz Winchester, CA. (3188 posts) Registered: 04/24/2009 11:02AM Main British Car: 74' Jensen Healy, 79 Huff. GT 1, 74 MGB Lotus 907,2L |
Re: What if, Quad valve RV8 ? Not BMW
Todd and clan, to clarify, using oem Lotus heads on the RV8, is a viable solution vs mostly impossible, obtaining Repco V8 variants. This is a project of love/challenge, and blissfully free, of common sense. Where one to ask Fred Key, Pete Aardema and to a small extent,(just getting started), myself," how much per hour will you make" ?, Who's counting ? Cheers, roverman.
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Re: What if, Quad valve RV8 ? Not BMW
roverman
Date: October 14, 2014 12:57PM This is a project ... blissfully free, of common sense. Always the best kind. However, your original question was "how it should be classified for racing". And my reply isn't simply smartass, it may be applicable to your subject. What were those Repco OHC 5.0L cars classified as? "The sports car engine (increased in size to 5.0 litres) was however dominant domestically, powering cars to several wins in the Australian Sports Car Championship and its predecessor the Australian Tourist Trophy, most notably powering the Matich sports cars built and raced by Frank Matich, and Elfin Sports Cars built and raced by Garrie Cooper ." Edited 2 time(s). Last edit at 10/15/2014 02:24PM by Todd McCreary. |
djw090 David Witham Warwick UK (115 posts) Registered: 06/12/2008 11:20AM Main British Car: MGB 1974 and MG ZT 160 turbo 2005 |
Re: What if, Quad valve RV8 ? Not BMW
My sources tell me that around the time the BL/Rover O series SOHC engine that was being converted to DOHC 4 valve to make the M series engine there was a project to do something similar with the Rover V8. Unfortunately I don't know much about it. I am told that in those days they had some good design engineers but not enough money to put all the ideas into production so there was quite a lot of what they called shelf engineering going on. The O series was itself an adaptation of the OHV B series engine.
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Re: What if, Quad valve RV8 ? Not BMW
Wildcat Engineering has a 6 + litre with 4 inch bore, and big valve heads. or take a 300 Buick out to 350 cubes with 340/350 crank 3.850 inches in 3.80 bore use 300 aluminum heads with big valves for light weight. But BADASS is best with 455 block.
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BlownMGB-V8 Jim Blackwood 9406 Gunpowder Rd., Florence, KY 41042 (6470 posts) Registered: 10/23/2007 12:59PM Main British Car: 1971 MGB Blown,Injected,Intercooled Buick 340/AA80E/JagIRS |
Re: What if, Quad valve RV8 ? Not BMW
Yes, the MG-Roadmaster uses the TA-Performance Street Eliminator heads for fenderwell clearance on the 455 with tubing log exhausts. Requires some body mods but not as much as you might think. Relocated steering is helpful for lowering the engine but requires lower control arm mods. Front frame rail mods allow a 32 x17" radiator. Same mods are needed to fit the Buick 340 or 350. Alloy heads are available for the 340 and will soon be available for the 350 from TA.
Best bang for the buck? Either the 300 or the stroked 300/350. The 455 really is overkill but with a mild build is amazingly docile yet powerful. Jim |
Phillip G Phillip Leonard Kansas City (395 posts) Registered: 02/03/2008 04:12PM Main British Car: 1992 MG RV8 Rover 3.5 |
Re: What if, Quad valve RV8 ? Not BMW
I know of no class in SCCA racing that would allow the Quad Valve RV8 cylinder heads.
Intriguing ideal and I'll go right to my latest GCR to see if there is a variant in one of the National classes. Now I think it might pass muster in one of the many Solo classes. keep them on the track, phillip g |