Technical help Q & A Got A technical problem with you car? Keep it in here where the techies hang out and we will try to solve it for you!!

diff & hubs

Thread Tools
 
Search this Thread
 
Old 31-07-2011, 11:26 AM
  #1  
cossydave377
Wahay!! I've lost my Virginity!!
Thread Starter
 
cossydave377's Avatar
 
Join Date: Jul 2004
Location: Redruth, Cornwall
Posts: 60
Likes: 0
Received 0 Likes on 0 Posts
Default diff & hubs

im after some info please guys
im building a kit car and it uses sierra hubs.
i want to use granada hubs as im running 5x114.3 wheels (nissan) and will use wobble bolts

so am after info to do such job.

also it uses a 7" diff but hasnt got a lsd.

im looking at buying a 12v automatic m reg granada for the wheel hubs etc and also for the diff but im not sure what ratio it uses.

can you help there as well please?

i know its not a lsd but im going to buy a quife as every lsd ive had on other cossies etc has always been a bit open for my liking and i drove a quife lsd in a xr4i mk1 and loved it.
Old 31-07-2011, 12:13 PM
  #2  
dojj
Resident Wrestling Legend
iTrader: (3)
 
dojj's Avatar
 
Join Date: May 2003
Location: Little India
Posts: 50,018
Received 258 Likes on 221 Posts
Default

if you want a granada to get the bits from with "standard" ratios then you need to buy a pre 94 car

your potential purchase "should" have the 3.64:1 diff, same as the 2wd cossie and it "should" come with a 7.5 inch diff

if you want a 7 inch lsd then you would need to find an xr or cossie 4wd rear diff which are all interchagable and will fit in the same beam you are thinking of using
Old 31-07-2011, 12:25 PM
  #3  
cossydave377
Wahay!! I've lost my Virginity!!
Thread Starter
 
cossydave377's Avatar
 
Join Date: Jul 2004
Location: Redruth, Cornwall
Posts: 60
Likes: 0
Received 0 Likes on 0 Posts
Default

im a dick
i meant 7.5" sorry mate
ive got a 7" welded diff with bolt in shafts i was trying to fit and it didnt fit

what does the 4.. and high 3.97 etc diffs come from?
i know that a 3.77 comes from a scorpio cosworth as i had one of those
as said im not bothered about a lsd as im going to go quife

dosnt the m reg hubs fit in place of sierra hubs?
Old 31-07-2011, 12:27 PM
  #4  
dojj
Resident Wrestling Legend
iTrader: (3)
 
dojj's Avatar
 
Join Date: May 2003
Location: Little India
Posts: 50,018
Received 258 Likes on 221 Posts
Default

the granadas only came with 3.36, 3.62 and 3.64 diffs as far as i'm aware, the sierra diffs were also available in 3.92 as a 7.5 inch size

the granada hubs will replace the sierra ones no bother as they are the same other than having more holes in them for the studs
Old 31-07-2011, 12:31 PM
  #5  
cossydave377
Wahay!! I've lost my Virginity!!
Thread Starter
 
cossydave377's Avatar
 
Join Date: Jul 2004
Location: Redruth, Cornwall
Posts: 60
Likes: 0
Received 0 Likes on 0 Posts
Default

this is the kit car

http://www.agmsportscars.co.uk/agm_s...cars_2_003.htm

mines not even nearly finished yet but you get the idea
it uses rover modded 3.5 V8, LT77 box, sierra rear diff and shafts, sierra hubs all round, cut in half and shortened steering rack!! yea i thought it was odd too!
basicly its a locost chassis with outriggers and a massive fibreglass shell bolted on
looks good IMO
should go well 220bhp and 750kgs
but sounds AWSOME
Old 31-07-2011, 12:32 PM
  #6  
cossydave377
Wahay!! I've lost my Virginity!!
Thread Starter
 
cossydave377's Avatar
 
Join Date: Jul 2004
Location: Redruth, Cornwall
Posts: 60
Likes: 0
Received 0 Likes on 0 Posts
Default

blimmy which sierra came with a 3.92? 7.5"

auto?
Old 31-07-2011, 12:56 PM
  #7  
dojj
Resident Wrestling Legend
iTrader: (3)
 
dojj's Avatar
 
Join Date: May 2003
Location: Little India
Posts: 50,018
Received 258 Likes on 221 Posts
Default

Originally Posted by cossydave377
blimmy which sierra came with a 3.92? 7.5"

auto?
every dohc injected car between 90 and 92
Old 31-07-2011, 03:33 PM
  #8  
tabetha
20K+ Super Poster.
 
tabetha's Avatar
 
Join Date: Jul 2006
Location: uk
Posts: 24,596
Likes: 0
Received 3 Likes on 3 Posts
Default

My mk1 sierra auto 2L had a 3.38 diff as I sold it to a kit car chap, for the bike engined kits they're well sought after.
tabetha
Old 31-07-2011, 03:35 PM
  #9  
tabetha
20K+ Super Poster.
 
tabetha's Avatar
 
Join Date: Jul 2006
Location: uk
Posts: 24,596
Likes: 0
Received 3 Likes on 3 Posts
Default

Originally Posted by cossydave377
this is the kit car

http://www.agmsportscars.co.uk/agm_s...cars_2_003.htm

mines not even nearly finished yet but you get the idea
it uses rover modded 3.5 V8, LT77 box, sierra rear diff and shafts, sierra hubs all round, cut in half and shortened steering rack!! yea i thought it was odd too!
basicly its a locost chassis with outriggers and a massive fibreglass shell bolted on
looks good IMO
should go well 220bhp and 750kgs
but sounds AWSOME
It's a pity the mega slow changing Lt77 won't change fast enough, it's a seriously slow box, you must have a lot of mods for 220bhp from a 3.5, what's done to it ?, they produce good torque rather than bhp.
tabetha
Old 31-07-2011, 06:50 PM
  #10  
cossydave377
Wahay!! I've lost my Virginity!!
Thread Starter
 
cossydave377's Avatar
 
Join Date: Jul 2004
Location: Redruth, Cornwall
Posts: 60
Likes: 0
Received 0 Likes on 0 Posts
Wink

Originally Posted by tabetha
It's a pity the mega slow changing Lt77 won't change fast enough, it's a seriously slow box, you must have a lot of mods for 220bhp from a 3.5, what's done to it ?, they produce good torque rather than bhp.
tabetha
yea i know i was going to put a ls2 in when it comes up at the right time.

loads run 2wd cossie 280-380bhp, v8 rover 150-300bhp and there is a v12 AMG approx 550-650bhp engined one being built as well

my engine is over bored to nearly 3.7, high lift cam, rhodes, webber 500 carb, inlet manifold, tubular headers,only 1 exhaust silencer per side, v.mild head work, and an electric fan.
220bhp is what ive been told, but i had a 3.5 same spec and it made 174bhp@wheels this is a pretty much standard tuning setup that people go for and get around 175-180@wheels, i was going to get a turbo-ed 3.9 with nos running a genuine 376bhp but the rover engine is made of chocolate and is more unreliable than a YB running 400bhp on 4 greens

im going to get it up and road worthy then get used to the rover and get a ls when the time is right, ive got so many other projects at present and need to concentrate on getting some completed

Last edited by cossydave377; 31-07-2011 at 06:52 PM.
Old 01-08-2011, 08:04 AM
  #11  
tabetha
20K+ Super Poster.
 
tabetha's Avatar
 
Join Date: Jul 2006
Location: uk
Posts: 24,596
Likes: 0
Received 3 Likes on 3 Posts
Default

I think you're using a over reading rolling road, not dyno dynamics is it ?
I've got a 4.6 ford modular V8 for sale complete with all ancillaries, was intended for a rear engined kit car(GT40) and a gearbox/transaxle the same as ascari use, that was £31K new for sale also, if interested!!
tabetha

Last edited by tabetha; 01-08-2011 at 08:06 AM.
Old 01-08-2011, 05:51 PM
  #12  
cossydave377
Wahay!! I've lost my Virginity!!
Thread Starter
 
cossydave377's Avatar
 
Join Date: Jul 2004
Location: Redruth, Cornwall
Posts: 60
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by tabetha
I think you're using a over reading rolling road, not dyno dynamics is it ?
I've got a 4.6 ford modular V8 for sale complete with all ancillaries, was intended for a rear engined kit car(GT40) and a gearbox/transaxle the same as ascari use, that was £31K new for sale also, if interested!!
tabetha
220bhp (flywheel) isnt a lot over what id EXPECT given the mods, rover v8's respond quite well to headers and a cam, the webber just makes it all work. id expect that lot alone to make 180min and 210-220max
the 3.5 make 150bhp on twin su carbs, cast manifold and standard exhaust and cam.
v.v mild cam and injection they made 190bhp

im after an ls3 if and when the time is right, i want to see around 450-475bhp NA
Old 01-08-2011, 07:32 PM
  #13  
tabetha
20K+ Super Poster.
 
tabetha's Avatar
 
Join Date: Jul 2006
Location: uk
Posts: 24,596
Likes: 0
Received 3 Likes on 3 Posts
Default

Injections never made 190, despite the hype, same with the 4.6 power, and the reason why RR/LR were actually prosecuted in the states, for woefully misleading figures.
You get the same bullshit figures from TVR, way way off the mark from quoted power on the RV8.
tabetha

Last edited by tabetha; 01-08-2011 at 07:33 PM.
Old 01-08-2011, 08:59 PM
  #14  
cossydave377
Wahay!! I've lost my Virginity!!
Thread Starter
 
cossydave377's Avatar
 
Join Date: Jul 2004
Location: Redruth, Cornwall
Posts: 60
Likes: 0
Received 0 Likes on 0 Posts
Default

i was going on this table from mez


Engine Size 3.5 3.9 4.2
Just A cam 185BHP@5500rpm, 210lbft@4000rpm 205BHP@5200rpm, 235lbft@3800rpm 220BHP@5000rpm, 250lbft@3700rpm
Cam And Flowing 210BHP@6000rpm, 230lbft@4000rpm 225BHP@5700rpm, 250lbft@3800rpm 240BHP@5500rpm, 270lbft@3700rpm
Plus 10.5:1 C/R 215BHP@6000rpm, 245lbft@4000rpm 235BHP@5700rpm, 265lbft@3800rpm 260BHP@5500rpm, 285lbft@3700rpm
Plus Big cam and trumpets 265BHP@6300rpm, 255lbft@4900rpm 275BHP@6000rpm, 275lbft@4800rpm 290BHP@5800rpm, 290lbft@4700rpm


the rovers not a great engine but its in the car and there is loads to do before i swap it for a ls engine
as the saying goes ' it'l do for na' LOL
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Sierrasideways
Cars & Parts Wanted.
9
08-10-2015 06:37 PM
Iain Mac
General Car Related Discussion.
7
30-09-2015 09:39 PM
fordrallycar
Ford RS Cosworth Parts for Sale
0
30-09-2015 07:57 PM
DavidK
Ford Sierra/Sapphire/RS500 Cosworth
1
27-09-2015 02:55 PM
IainRS1700T
Cars for Sale
9
25-09-2015 06:44 AM



Quick Reply: diff & hubs



All times are GMT. The time now is 10:00 AM.