Mike1

ETA Lee's costs

M K

iTrader: (9)

car is going to be track car so 99.9% tarmac use,

4wd and im thinking around the 450bhp/450lb ft as an estimate

what do you think on a gripper 7.5inch plated rear and gripper plated front in thick wall casing with strengthening plate and uprated casing bolts ?

gearbox wise i am unsure yet but have seen a group n quaife big tooth box for sale but im unsure on thier capabilities so need to find out about that,

thanks
marc,

and cheers the the price guide lee, very helpful

markk

iTrader: (2)

the gripper rear should be fin in a 4wd, as for the front, well by the time you have spent all that money on a thick case, plate, diff unit and other mods i bet your close to R+D money with a bigger CWP, if you can go 7.5/8.5" front then i would say use the R+D, dont bother with the modifications to the std unit.
AG has used the R+D in his and had no issues, and he does launch it somewhat, as for the big tooth and 450ft/lb, do you think your engine will make that ? ive only really seen one engine builder (public engine builder) that woud stand a chance of getting you 450ft/lb from a 400hp motor - or even a 500hp motor.

Fudgey

iTrader: (4)

good point, i really should have seen that one coming

i meant for the gripper unit, did you get a recipt with all parts used listed?

as in, fit gripper diff to casing, and any addional parts listed like output flanges etc?

or does it just use the std cossie ones?

cheers for any info you can shed lol.

ps where did you buy the gripper from?

Mike1

Does goes to show that any decent rear diff is a 4-figure sum new

steveboyslim

7'' is less than 7 1/2, both types.
Casing normally needs machining, as do the output shafts (Gripper).
VC shafts needed for Gripper, open diff shafts or Quaife supplied needed for Quaife ATB.
Less money than what has been quoted but it does depend on what is supplied or needed.

Steve

markk

iTrader: (2)

ill give you the answer to that, with the gripper you have to (or i would advise ) that you machine the ends of the std flanges to be slightly wider and deeper to accept sprung circlips, on the std diff you hold them in through the back plate with fixed large E clips, as the diff is a closed planetary setup with ramps you cannot fit these clips back on, but there is space inside for a spring clip to slidein and then relax off the spline.

I have fitted a good few of these in cosworth housings.
great diff unit.

pauljh

iTrader: (1)

I blew my diff up the weekend, it was an uprated vc one, it has done well as it has always had a lot of power flowing through it.
The engine has gone from 350 ish to 605 bhp 436lb/ft over the last 8 years with several upgrades.

My question is what diff would be most suitable for a car that weighs approx 750 kg with this sort of power? The car is 2wd

Follow the link for pictures.

http://forum.daxsportingclub.com/php...t=425&start=70

Please advise all you people in the know!!!????

pauljh

iTrader: (1)

Anybody ??????

Porkie

iTrader: (1)

Gripper... 7 or 7.5. get the CWP peened and polished for extra strength.

steveslimboy on here supplied and buit mine.

cool car by the way. where in Essex are you?

would love to see it!

pauljh

iTrader: (1)

Thank you, i am at Elmstead Market near Colchester,
How do i reach steveslimboy?

pauljh

iTrader: (1)

Just worked out how you pm someone, not good with computers!

Porkie

iTrader: (1)

no worries. I have his phone number if you need it?

markk

iTrader: (2)

I would go with porkie on this but use the 7.5", as much as you dont need a very strong diff as you dont have the weight to propel, you do have good torque if you have sticky tyres, so at least you have the bigger cwp

JonnyBravo

605hp Jesus that thing must be fast when it hooks up

pauljh

iTrader: (1)

Yea, on 7.5" at the moment, an absolute barstard to get out of the car especially with boot mounted radiator (doesnt drop out underneath) Only had it out once before and i broke 2 torque bits trying to undo the drive shaft studs.
I attempted to get it out Tuesday night and broke one again on the first stud! waiting for a Snap on one to turn up today, will try again the weekend.

Looking like a plated diff is the best option.

markk

iTrader: (2)

local fasteners and fit cap heads, plated is the best option, you need to find out what type of failure you had in the 7.5"

pauljh

iTrader: (1)

I will take some photos, i will probably need someone to upload them for me. I should really learn how to do it!

JonnyBravo

email them to Lustral45@hotmail.com and I will upload them for you.

That or open a photobucket account and copy and paste the IMG tag from each photo onto the post your making on a forum.

www.photobucket.com

pauljh

iTrader: (1)

Thank you JonnyBravo,
I have just opened an account, if i have problems i will email them to you.

Mike1

Hi Paul

Who uprated the VC for you and what setting was it at?

JonnyBravo

Not a problem, it shouldn't be too hard to work out

pauljh

iTrader: (1)

The diff was uprated by Philip Peacock in Mundon Essex, he sent the vc lsd off to be uprated and then rebuilt it for me, i dont know who he sent it off to. It was set to 180nm.

Mike1

Cheers for the info Paul

marco polo

iTrader: (1)

Hi Mike

just for the record

the bara diff is not £700 let me explain ....lol..


£700 is for a diff with everything in it .uprated VC/ uprated planet gears



it's 250 for the uprated VC unit


standard strip down re build is 150 then it's plus parts bearings seals ect

so if you have uprated VC without...the uprated planet gears £450


or a diff striped and rebuild with just upated planet gears is 450


700 is the top dog with everything

marco

steveboyslim

PM sent.
If I said Arrow rods and solid lifters you may remember me.

Steve

Mike1

Cheers Marco - good info - still seems a good price for a primarily road car diff

pauljh

iTrader: (1)

Planet gears look ok, Crown wheel and pinion fooked.

markk

iTrader: (2)

so non of the aftermarket diffs will be any use to you as they all retain the std cwp, could you get a 9" motorsport unit in?

pauljh

iTrader: (1)

Not a hope in hell, it has taken all day to get it out of the car. The 7.5" diff has the corners ground off and quite a bit of the webbing ground off to fit in the chassis, it is sooooo tight and only comes out one way with the back plate removed!
Do you think the shot peening of crown wheels and pinions does any good? I think this is something Bara does.

markk

iTrader: (2)

i was just going to say, your only option is having a motorposrt cwp made or the cheaper optionm though maybe just a chance that shot peening may help to lengthen service life

pauljh

iTrader: (1)

Picked up my rebuilt plated diff yesterday from Bara Motorsport, it was nice meeting Bara, he is a top fella.
Just got to get it back in the bloody car now!

alistairolsen

If I suply a 3.62 viscous LSD, how much would you charge to strip it, change the viscous fluid within the limits of the standard plates and rebuild it with new bearings and seals?

Cheers

pauljh

iTrader: (1)

Had a few runs out in the car now, the plated diff is superb, it has also taken a lot of understeer out of the car under hard accelleration. The clonking at slow speeds on tight bends take a bit of getting used to though.