Mad Matt

iTrader: (2)

Just wanted to know which top speed you would get with a 4.44 crown kit for the rear diff and the pignons + chain 4.44 kit for the front transfer box. Also how much do you recon it does cost. Got one, but would like to know if the price was a bargin or not. I guess, yes, but who knows.

Paul_RS

iTrader: (4)

Standard ratios with a 4.44 final drive gives -

Top Gear gives 18.110 MPH/1000 RPM and a top speed of 126.769 MPH at 7000 RPM

Engine speeds in top gear:-
30 MPH = 1657 RPM 40 MPH = 2209 RPM 50 MPH = 2761 RPM 60 MPH = 3313 RPM
70 MPH = 3865 RPM 80 MPH = 4417 RPM 90 MPH = 4970 RPM 100 MPH = 5522 RPM

Top Speed in 1 gear = 29.146 MPH
And changes into 2 gear at 4033 RPM dropping 2967 RPM
Top Speed in 2 gear = 50.586 MPH
And changes into 3 gear at 4577 RPM dropping 2423 RPM
Top Speed in 3 gear = 77.366 MPH
And changes into 4 gear at 5147 RPM dropping 1853 RPM
Top Speed in 4 gear = 105.218 MPH
And changes into 5 gear at 5810 RPM dropping 1190 RPM
Top Speed in 5 gear = 126.769 MPH


Thats with a rev limier of 7000 rpm and on standard size tyres 205/50/R15

Mad Matt

iTrader: (2)

Thank you mate, can't be more complete !

Paul_RS

iTrader: (4)

Not a problem chum

Mad Matt

iTrader: (2)

Hell I thought I had got one, but the guy finally told me he sold it to another guy.

So if anyone knows where there is a 4.44 rear diff (7 1/2) and the chain kit for the transfer box, please tell me.

Richie.

iTrader: (5)

I'll ask Marco tomorrow

Mad Matt

iTrader: (2)

Thank you mate.

Regarding the PM, you know what means endless job (the sapphire).

marco polo

iTrader: (1)

hi mate


my mate charges 600 for a 4.44 cwp for a 7 or 7.5" these are brand new not second hand 350 for 4.44 drop gear in the gear box again brand new with brand new chain he has the last 70 chains genuine OE parts


second hand obviously lot cheaper

marco

Kelv

iTrader: (4)

marco polo, while your online.

quickie in regards to a quaife ATB rear diff (7")
what would you roughly quote to remove the 3.9 CWP from one of my diffs and have it fitted into an already asembled Quaife.

Ta.



Xen, sorry to hijack your thread.

markk

iTrader: (2)

marco - second hand is no cheaper tbh and your buying used stuff if you can find it - i would just buy them new with no messing.

STUCOS

iTrader: (8)

What woul the top end be with 4.44 gears,but with 21/35/18 tyres,as thats what my mate has on his saff track car he is building

cheeRS stu

markk

iTrader: (2)

about 136 @7k

david

4.44 is great gearing for kh. martin has it coupled to his 520 gibbs engine on a t4 and it pulls really well on a r&d box (cant mind if it is 5 or 6 speed) red escos normally on 16" rfx's.

Mad Matt

iTrader: (2)

Sorry to annoy you mate, but could you tell me how you did these maths, because I want to do them by myself with these values :

225/40R16 tyres with gearbox ratio :

1: 2.649 or 2.390
2: 1.909
3: 1.515
4: 1.227
5: 1.000

With the chain kit and 7 1/2 rear diff, a plate for the front diff would cope with the bigger amount of torque or not enough ?

KSA-Cossie

iTrader: (4)

Comprehensive to say the least.

NUTS RuS

iTrader: (35)

http://www.gearboxman.co.uk/inforatios.html

Mad Matt

iTrader: (2)

Thank you mate !

For those who want the answer to my question :

4.44 diff with 225/40R16 tyres and gearbox ratios :

1: 2.390
2: 1.909
3: 1.515
4: 1.227
5: 1.000

Speeds with shifting at 6k rpm :

1: 2.390 (39 m/h)
2: 1.909 (49 m/h)
3: 1.515 (61 m/h)
4: 1.227 (76 m/h)
5: 1.000 (93 m/h)

Err 93 m/h even for a rally car is too short imo. Gonna look at gearbox settings now because don't wanna touch the tyres size.

marco polo

iTrader: (1)

sent you pm mate

Gatecrasher

Paul_RS

Hi paul sorry to be a pain but could you convert Standard ratios with a 4.44 final drive with an Engine that revs to 8000RPM on 235/40/18 Wheel and tyres

Cheers

Gatecrasher

Anyone please?

Mad Matt

iTrader: (2)

Got a brand new never been used 4.44 rear diff with Quaife internals :



Don't remember if it is a 7" or 7.5" but anyway I need now the kit for the front. I noticed marco's offer (350£) for it brand new, will think about it, but sounds like a great option. Still I have few months to find a great bargin.