J Man jason adkins NW OH (202 posts) Registered: 01/21/2009 08:49PM Main British Car: '61 Morris Minor panel, '70 MGB GT, '74 MGB GT MGB 1.8, unsure yet on the GTs |
Re: 4.6 GT V8 Modified for road & track
Any chance you could do a write up for the Photo Gallery section, I did not see one there.
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Preform Resources Dave Craddock Redford,Michigan (359 posts) Registered: 12/20/2008 05:46PM Main British Car: 72 MGB V6 3.4 |
Re: 4.6 GT V8 Modified for road & track
Mark, been watching your videos,,,,,,,,,,,,,,,,,THEY ARE GREAT!
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Re: 4.6 GT V8 Modified for road & track
After destroying 2 big end bearings the engine is now 4.8 with a new standard 4.6 crankshaft and 96mm forged pistons.
Did my first trackday for six months last Saturday and found this on youtube. [www.youtube.com] |
Re: 4.6 GT V8 Modified for road & track
Wow! I've seen your videos before but I'm thoroughly impressed with the new handling characteristics - on this side of the pond they have an event called 'driftwater' where for a small price you can practice drift/grip skills. Your car looks like it would fair well in both. I'm wondering though what are the characteristics of the shocks you're running? I have a 4.9L setup and I'm considering rebuilding the shocks however I'm not sure if I should swap in the 20% stiffer valves or rebuild them to stock specifications(I have a rubber bumper model mind you).
Any advice? Keep up the good work |
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Re: 4.6 GT V8 Modified for road & track
Robert
Yes the handling is much improved with the new panhard location, Curtis Yes I need to sort this out, must take some more photos. |
Re: 4.6 GT V8 Modified for road & track
Here is a pic from last week at Brands Hatch.
![]() and here is a clip from the day. [www.youtube.com] Mark |
Re: 4.6 GT V8 Modified for road & track
Havent been on here for a while. Late last year I had a lot of issues with the car mainly with oil surge/pressure problems.
After the Big end failure in June last year i fitted the later intermediate timing cover with the crank driven oil pump and a Davies craig EWP. Straight away i was having problems with low oil pressure under medium to hard cornering. Was using the same sump/pickup so couldn't work out why. I tried fitting a big wing trap doored sump which improved things slightly but still not good. Would like to have fitted a dry sump but space was too tight so as a compromise fitted an Accusump which seems to have solved the problem. Now have 2 Gopro cameras so video quality is improved. Here is my latest adventure with the car spinning out near the end. Cheers Mark Edited 1 time(s). Last edit at 06/18/2012 05:25AM by v8bloke. |
Re: 4.6 GT V8 Modified for road & track
Rear wing and front splitter getting their first test on Track @ silverstone.
[www.youtube.com] A huge improvement to high speed stability and cornering. |
Re: 4.6 GT V8 Modified for road & track
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Re: 4.6 GT V8 Modified for road & track
The guys doing the conversion, [www.lloydspecialistdevelopments.co.uk] have managed to get it running and done some mapping on the road. Next step is a Rolling road session on Tuesday 3rd Sept so hopefully should get a power run and will post the dyno sheet.
Not expecting big gains in top end but throttle response and pickup should be improved. Spec is 96mm bore, std 4.6 crank, forged pistons, Merlin F85 heads, Roller rockers, Mechanical 238 cam. 10.5:1 CR |
Re: 4.6 GT V8 Modified for road & track
Had to fit an uprated clutch as it started slipping on the rolling road. Re visited the RR today for final mapping and power runs.
Very happy with the results. ![]() This is the latest vid with the new setup. [www.youtube.com] Cheers Mark |
DiDueColpi Fred Key West coast - Canada (1386 posts) Registered: 05/14/2010 03:06AM Main British Car: I really thought that I'd be an action figure by now! |
Re: 4.6 GT V8 Modified for road & track
Hey Mark,
I don't care if you made 2 hp and 5 ftlbs of torque. The car looks meaner than hell and must be a thrill to drive. Well done. Cheers Fred |