3.7 DIFF

Post by **callyspoy** » Wed Apr 09, 2008 7:50 pm

dunketh...who are you talking about?? i cant see any MGF wheels on here...apart from mine now!!

Post by **bmcecosse** » Wed Apr 09, 2008 8:29 pm

They do look fine!

Post by **callyspoy** » Wed Apr 09, 2008 8:34 pm

if you are talking to me, then thank you very much!
as we are talking diffs...i think a 3.7 would be absolutely fine on 1098, again, hills would be an issue, and slower acceleration, but my 3.3 pulls my 1275 with bigger wheels so hmm...

Post by **Kevin** » Tue Apr 15, 2008 2:08 pm

but my 3.3 pulls my 1275 with bigger wheels

What did the 3.3 diff come from

Post by **bmcecosse** » Tue Apr 15, 2008 9:44 pm

Isn't it a Marina Axle in that car ?

Post by **Matt** » Tue Apr 15, 2008 9:59 pm

Yes he has a marina axle... hence the mgf wheels ;)

Post by **bmcecosse** » Tue Apr 15, 2008 10:30 pm

But which model of Marina had the 3.3 diff ?

Post by **callyspoy** » Thu Apr 17, 2008 1:37 am

hi, sorry, i've not been online last few days. the diff was specifically for marina 2litre AUTO(or i think dolomite 1850 auto), so pretty rare i think...a rare gem from ebay, only cost 100 english notes, but it was touch and go as to whether it would actually drive the car! not had it on a motorway incline yet though, cant wait!

haha! ohwell!

Post by **bmcecosse** » Thu Apr 17, 2008 9:48 am

Aha - thanks for the update.

Post by **Kevin** » Thu Apr 17, 2008 2:25 pm

Yes a rare diff indeed, and it still pulls a 1275 OK.

Post by **Packedup** » Thu Apr 17, 2008 2:47 pm

Kevin wrote:Yes a rare diff indeed, and it still pulls a 1275 OK.

Actually, I'm not so sure Dolomite diffs in any flavour are all that rare - Plenty of complete axles seem to go for not much if anything!

If a Dolomite diff fits there's also plenty of other ratios to choose from that are taller than the 4.2 Minor one - I seem to recall having at least one Dolly 1500 auto back axle kicking around, and I think they're around 3.7. So maybe all those people paying major cash for 3.7 diffs should look at fitting a Marina axle and looking for Dolomite diffs instead - Might actually work out cheaper!

Post by **Kevin** » Thu Apr 17, 2008 2:52 pm

But not if you want to keep the standard rims, but you do have a fair point.

Post by **aupickup** » Thu Apr 17, 2008 6:19 pm

3.7 are quite rare, just sold a nos one for £400.00

Post by **wanderinstar** » Thu Apr 17, 2008 6:41 pm

400quid

Wheres me spanners. Anyone want a 3.7??

Post by **aupickup** » Thu Apr 17, 2008 6:58 pm

yes but mine was a new old stock and never fitted

2nd hand about £75.00 to £125.00 depending on condition

Post by **wanderinstar** » Thu Apr 17, 2008 7:00 pm

Oh well in that case it can stay where it is

Post by **Packedup** » Thu Apr 17, 2008 7:09 pm

aupickup wrote:2nd hand about £75.00 to £125.00 depending on condition

Call it a Midget diff and add 50 quid to those prices...

The 3.7 Minor/ Midget diff is rare, but the topic seemed to have drifted to Dolomite 1850 auto diffs - Which aren;t as rare AFAIK, or at least aren't as pricey when they turn up!

Post by **aupickup** » Thu Apr 17, 2008 7:20 pm

yes but i think you will find that originally the 3.7 was for a riley 1500 and the 1500 midget had a 3.9

Post by **Packedup** » Thu Apr 17, 2008 7:36 pm

Late 1500 Midgets had the 3.7 - It was only something like the last 2 years or so of production though IIRC.

Post by **callyspoy** » Fri Apr 18, 2008 1:50 am

to be fair, 3.7 adds a little more then most, and i saw that diff go for what it deserved. put a 3.7 on a minor and if you use it everyday, you will get your money back in a few months. no joke!
in regard to the diff i have...auto is the only way to get the ratio i have, dolomite or not, in time, 5 speed will be added, but until then, slow hills, HERE I COME!!!