Discussion
Was just wondering what difference i should notice from the change in Diff. I mean i know it will be quicker but does anyone know the stats on rpm in each gear from the 3.4 - 3.9???????????
Also when crossing the quarter beam i'm in high revs third gear/ low revs fourth, I'm guessing i'll be in fourth every time now.
I will speak to Roger about it on Tuesday but bless them they've had a busy week (plus our cars posed a few problems
)
TIA
Also when crossing the quarter beam i'm in high revs third gear/ low revs fourth, I'm guessing i'll be in fourth every time now.
I will speak to Roger about it on Tuesday but bless them they've had a busy week (plus our cars posed a few problems
) TIA
www.monkfishperformance.co.uk/diffspeedsummary.html
im thinking of going 3.7. the gearing of my cv8 is a joke it really blunts the cars performance. 3rd and 4th are good. but when i hit 120, i put it in 5th and it drops to like 4k! feels like i hit a brick wall!
why couldnt vauxhall for once just do it right the first time!!!
im thinking of going 3.7. the gearing of my cv8 is a joke it really blunts the cars performance. 3rd and 4th are good. but when i hit 120, i put it in 5th and it drops to like 4k! feels like i hit a brick wall!
why couldnt vauxhall for once just do it right the first time!!!
k15tox said:
www.monkfishperformance.co.uk/diffspeedsummary.html
im thinking of going 3.7. the gearing of my cv8 is a joke it really blunts the cars performance. 3rd and 4th are good. but when i hit 120, i put it in 5th and it drops to like 4k! feels like i hit a brick wall!
why couldnt vauxhall for once just do it right the first time!!!
Thanks do you have the standard 3.4 diff???? Or are you saying yours is the 3.9 now????im thinking of going 3.7. the gearing of my cv8 is a joke it really blunts the cars performance. 3rd and 4th are good. but when i hit 120, i put it in 5th and it drops to like 4k! feels like i hit a brick wall!
why couldnt vauxhall for once just do it right the first time!!!
Bonnie and Clyde said:
k15tox said:
www.monkfishperformance.co.uk/diffspeedsummary.html
im thinking of going 3.7. the gearing of my cv8 is a joke it really blunts the cars performance. 3rd and 4th are good. but when i hit 120, i put it in 5th and it drops to like 4k! feels like i hit a brick wall!
why couldnt vauxhall for once just do it right the first time!!!
Thanks do you have the standard 3.4 diff???? Or are you saying yours is the 3.9 now????im thinking of going 3.7. the gearing of my cv8 is a joke it really blunts the cars performance. 3rd and 4th are good. but when i hit 120, i put it in 5th and it drops to like 4k! feels like i hit a brick wall!
why couldnt vauxhall for once just do it right the first time!!!
no probs, i have the crappy uber long geared standard diff
after_shock said:
What problems did yours create Mel?
Monkfish had no problems, it all went smoothly when fitting the diff and RRP, it was when Roger took it for a test drive he noticed a noise coming from the front drivers side wheel. Cant remember exactly what he said it was 
Roger. They stripped it down and found that the lower of the two arms/ball joint(or something like that) was badly worn. There was movement in the wheel when he pulled on it(if you know what i mean) He's never had to change one before and has never come across that problem with one of these cars. On talking through what might have caused it we traced it back to when that dick head window cleaner ran a red light in his Fiat Scudo van. I tried to steer left to get out of his way but failed to avoid the collision. He hit the front drivers side. Luckily my traffic light had only just changed to green so i was only going slowly. If they'd been on green when i got to them I'd have been going a lot faster and it may have been a side impact
We'd only had the car two weeks
when we got a Vectra hire car for five weeks
Anyway the body shop said it was only aesthetic damage. It's only now we realise there was more damage done than that. I'm bloody pleased Roger found the problem. I'm not sure how safe it would have been at TR.
k15tox said:
Bonnie and Clyde said:
k15tox said:
www.monkfishperformance.co.uk/diffspeedsummary.html
im thinking of going 3.7. the gearing of my cv8 is a joke it really blunts the cars performance. 3rd and 4th are good. but when i hit 120, i put it in 5th and it drops to like 4k! feels like i hit a brick wall!
why couldnt vauxhall for once just do it right the first time!!!
Thanks do you have the standard 3.4 diff???? Or are you saying yours is the 3.9 now????im thinking of going 3.7. the gearing of my cv8 is a joke it really blunts the cars performance. 3rd and 4th are good. but when i hit 120, i put it in 5th and it drops to like 4k! feels like i hit a brick wall!
why couldnt vauxhall for once just do it right the first time!!!
no probs, i have the crappy uber long geared standard diff
Bonnie and Clyde said:
Magic919 said:
You might as well say you'll be a touch over 10% slower for any given revs/gear combo. 89 mph is the new ton. You'll use 4th to cross the line on your quarters I expect.
I'm sure I read on this topic somewhere that the car would be 24% quicker than before????????Magic919 said:
Bonnie and Clyde said:
Magic919 said:
You might as well say you'll be a touch over 10% slower for any given revs/gear combo. 89 mph is the new ton. You'll use 4th to cross the line on your quarters I expect.
I'm sure I read on this topic somewhere that the car would be 24% quicker than before????????Don't start getting confused, Mel. The gearing is lower, so the speed has to be lower too. However, the lower gearing improves acceleration.
Bonnie and Clyde said:
But the 0-60 and 1/4 miles will be quicker, yes?
I expect 0-60 to be slower if you can't hit 60 in second any more. I don't know the gearing on CV8 VZ to work it out.1/4 mile will improve once you've got used to launching it again. TR will give you a chance to check.
k15tox said:
www.monkfishperformance.co.uk/diffspeedsummary.html
im thinking of going 3.7. the gearing of my cv8 is a joke it really blunts the cars performance. 3rd and 4th are good. but when i hit 120, i put it in 5th and it drops to like 4k! feels like i hit a brick wall!
why couldnt vauxhall for once just do it right the first time!!!
im thinking of going 3.7. the gearing of my cv8 is a joke it really blunts the cars performance. 3rd and 4th are good. but when i hit 120, i put it in 5th and it drops to like 4k! feels like i hit a brick wall!
why couldnt vauxhall for once just do it right the first time!!!
Not a rant - just a few facts.
First of all, Vauxhall had nothing to do with it - they don't build the cars, just import them. Secondly the cars are Australian and built for Australian conditions - Long distance cruising, like 250 - 300 miles between petrol pumps for instance. Thirdly, 5th and 6th gears are 'overdrive' gears - 0.75 and 0.50 to 1 ratios, again, for cruising not accelerating - for acceleration stick to 1,2,3 and 4th. Holden is a mainstream consumer car manufacturer not Ferrari or Porsche, I think Holden building a car that will accelerate to and cruise at 140MPH is way above they're normal products. If you want breakneck acceleration in all gears then 'You' need to modify it to 'Your' needs as lots of others here have done.
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