5.0l 500BHP NA Rover V8 take 3
Discussion
Boosted LS1 said:
I had a 5.0 TT with a rebuilt LT77 and it was fine. I never loaded it up to much in 1st or 2nd and if I did it would smoke the tyres. Rear diff was 2.84 with lsd. I loved the whole package. I couldn't find a decent single plate clutch so had to buy a twin plate mcleod which I think may have been a chevy item. It was mounted with the bolts half way into the ring gear. I also had to put a couple of slots into the bell housing to get pressure plate clearance. The pressure plate had 3 levers instead of a dozen fingers. It was a really nice clutch with a light pedal feel.
A friend did a conversion with a 3.08 diff and he wrecked 2 gearboxes but he had no mechanical empathy.
Interesting to hear that your MacLeod twin plate clutch only had three fingers on the pressure plate. Mine has multi fingers and is extremely heavy hence recently fitting a clutch servo.A friend did a conversion with a 3.08 diff and he wrecked 2 gearboxes but he had no mechanical empathy.
I would also say that when fitted with my aluminium lightweight flywheel it bolted straight on without any modifications at all.
phazed said:
Boosted LS1 said:
I had a 5.0 TT with a rebuilt LT77 and it was fine. I never loaded it up to much in 1st or 2nd and if I did it would smoke the tyres. Rear diff was 2.84 with lsd. I loved the whole package. I couldn't find a decent single plate clutch so had to buy a twin plate mcleod which I think may have been a chevy item. It was mounted with the bolts half way into the ring gear. I also had to put a couple of slots into the bell housing to get pressure plate clearance. The pressure plate had 3 levers instead of a dozen fingers. It was a really nice clutch with a light pedal feel.
A friend did a conversion with a 3.08 diff and he wrecked 2 gearboxes but he had no mechanical empathy.
Interesting to hear that your MacLeod twin plate clutch only had three fingers on the pressure plate. Mine has multi fingers and is extremely heavy hence recently fitting a clutch servo.A friend did a conversion with a 3.08 diff and he wrecked 2 gearboxes but he had no mechanical empathy.
I would also say that when fitted with my aluminium lightweight flywheel it bolted straight on without any modifications at all.
Cpl of vids for the sceptics.
One the old 380hp 5lt, one the rebuilt.
Youll note a 11.7 qtr mile split time . Thats for a slippery start up hill, off camber 90 degree right hander and a dipper.
https://youtu.be/-_yBKmfFyYY
One the old 380hp 5lt, one the rebuilt.
Youll note a 11.7 qtr mile split time . Thats for a slippery start up hill, off camber 90 degree right hander and a dipper.
https://youtu.be/-_yBKmfFyYY
thewedgeshop.com said:
What transmission and clutch setup do you guys run when pushing 500bhp?
Running a 3.5lt RV8 Turbo, pushing 350hp 375tq to the wheels. Stock LT77 trans with Centerforce 10in Clutch.
Thinking of building a 5.2lt with same turbo setup, but worried about the trans and clutch.
https://www.thewedgeshop.com/clints-coupe.html
Nice to see you here.Running a 3.5lt RV8 Turbo, pushing 350hp 375tq to the wheels. Stock LT77 trans with Centerforce 10in Clutch.
Thinking of building a 5.2lt with same turbo setup, but worried about the trans and clutch.
https://www.thewedgeshop.com/clints-coupe.html
I like the look of your roller rocker cams .. they seem to offer some advantages over my mechanical M256.
Transmitter Man said:
Hi Alan,
My car is in dry secure storage in bucks.
I'm flying back to the UK soon and plan on visiting Topcats a local TVR shop and discuss continuing work on my car. Complete the chassis build, mount the body and install the EPS. That will be affordable I hope until I save up further funds.
You're out that way. Any other shops worth looking at?
I'd also like to hear more from our 500+ bhp friends in this thread.
Phil
420 SEAC
Wish I know of some .. tempted to get someone more local to finish mine..My car is in dry secure storage in bucks.
I'm flying back to the UK soon and plan on visiting Topcats a local TVR shop and discuss continuing work on my car. Complete the chassis build, mount the body and install the EPS. That will be affordable I hope until I save up further funds.
You're out that way. Any other shops worth looking at?
I'd also like to hear more from our 500+ bhp friends in this thread.
Phil
420 SEAC
Hi rev, yes its a jed , ive substantially ported it to match flow and port of ta head and make sure air fuel is mixed and not seoerated at low air speed.
The individual runners and 50mm jenvey are a bit of a bh for start up and idle. But once breathing theyre great.
What spark plug # you running?
Have you checked ports are matched?
Butterfly opening at idle is important too. Have you tried playing around with this. ?
Ive got a basic lucas 3.9v8 dizzy with reluctor, 14cux computer with a haltech sprint 500. Msd blaster 3 coil and bosch module. Bit of a bitza but does the job for now.
The reluctor has sheared off its plastic licator so ive bearing loctited back as a temp fix but am now looking into a new ignition system.
The individual runners and 50mm jenvey are a bit of a bh for start up and idle. But once breathing theyre great.
What spark plug # you running?
Have you checked ports are matched?
Butterfly opening at idle is important too. Have you tried playing around with this. ?
Ive got a basic lucas 3.9v8 dizzy with reluctor, 14cux computer with a haltech sprint 500. Msd blaster 3 coil and bosch module. Bit of a bitza but does the job for now.
The reluctor has sheared off its plastic licator so ive bearing loctited back as a temp fix but am now looking into a new ignition system.
Plugs are 6 heat range.
Inlut burn you can see in each inlet, so its not down to balance in the 8 x TB's, although I have balanced them with a air meter (snail).
I need to check the base timing again but our next mapping session we are looking at just this issue, so will be changing mixture and fuel to see if it can be overcome.
Emerald is the engine management and all is mappable.
The M256 has a lot of overlap, so I always worry that wasted spark causes an issue at low RPM.
Inlut burn you can see in each inlet, so its not down to balance in the 8 x TB's, although I have balanced them with a air meter (snail).
I need to check the base timing again but our next mapping session we are looking at just this issue, so will be changing mixture and fuel to see if it can be overcome.
Emerald is the engine management and all is mappable.
The M256 has a lot of overlap, so I always worry that wasted spark causes an issue at low RPM.
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