Discussion
Hi guys..
I know some of you have fitted a Sierra 2.3 diesel 3.14 diff. Let's not get bogged down with why ! I am doing this swop too (as part of a V6 Jag conversion).
My question is about the drive shafts. I know I could ask shaft suppliers, but thought I would get better unbiased info here.
The 3.14 diff on Sierra uses long push in drive shafts, unlike the short flanged output that the 'S' normally has, which I understand are circliped inside the diff.
So, will the original short flange shaft push into the 3.14 diff ?
And will it need circlips ?
After that I guess it use an amalgum of Sierra parts to suit the 'S'.
Cheers. TerryB.
I know some of you have fitted a Sierra 2.3 diesel 3.14 diff. Let's not get bogged down with why ! I am doing this swop too (as part of a V6 Jag conversion).
My question is about the drive shafts. I know I could ask shaft suppliers, but thought I would get better unbiased info here.
The 3.14 diff on Sierra uses long push in drive shafts, unlike the short flanged output that the 'S' normally has, which I understand are circliped inside the diff.
So, will the original short flange shaft push into the 3.14 diff ?
And will it need circlips ?
After that I guess it use an amalgum of Sierra parts to suit the 'S'.
Cheers. TerryB.
This place might help? http://www.super7thheaven.co.uk/components/sierra_...
Tried it and gave up.
I couldn't get the 3.14 to bits and so handed it over to the local diff man with a spare 3.64
He said non of it was compatible although the website suggests they are.
As I didn't do the work I can't say what exactly what wouldn't fit. The most likely solution would be keep the diff as is and adapt the driveshafts to suit.
I'll be very interested to find out how you get on
Edit; tripod driveshafts are push in, flanges are Lobro
I couldn't get the 3.14 to bits and so handed it over to the local diff man with a spare 3.64
He said non of it was compatible although the website suggests they are.
As I didn't do the work I can't say what exactly what wouldn't fit. The most likely solution would be keep the diff as is and adapt the driveshafts to suit.
I'll be very interested to find out how you get on
Edit; tripod driveshafts are push in, flanges are Lobro
Edited by Alan461 on Tuesday 26th January 21:34
I dont want to mess with the diff internals, just the shafts. I should have mentioned that I didn't get the long push in driveshafts with my purchase of the 3.14. There is J&R driveshafts in Birmingham, not too far from me, so it might be a chat or visit with them. Anybody used them ?
Edited by Blue 30 on Monday 25th January 21:18
Hello
I've got a 3.15 fitted but can't help I'm afraid. My diff came with the flanges so I reused the standard half shafts.
I have a 3.36 7.5" in need of a rebuild with 100mm flanges if it helps.?
If you go for custom half shafts you could always get some updated ones
Cheers
Damian S3 Duratec
I've got a 3.15 fitted but can't help I'm afraid. My diff came with the flanges so I reused the standard half shafts.
I have a 3.36 7.5" in need of a rebuild with 100mm flanges if it helps.?
If you go for custom half shafts you could always get some updated ones
Cheers
Damian S3 Duratec
Thanks for the kind offer.
I'll try to stick with the 3.14 for now.
I have found another driveshaft professional trader that's even closer to me. That being Driveshaft UK in Willenhall West Mids. So hopefully I can resolve this soon, although in reality I'm in no rush, as I'm only just heading towards finishing the chassis repairs. Then it can go to be blasted clean.
Uprating the driveshafts is an option, thanks for the reminder. But I have no intentions to put the S on the track. It will eventually become my retirement into Europe new steed.
TerryB
I'll try to stick with the 3.14 for now.
I have found another driveshaft professional trader that's even closer to me. That being Driveshaft UK in Willenhall West Mids. So hopefully I can resolve this soon, although in reality I'm in no rush, as I'm only just heading towards finishing the chassis repairs. Then it can go to be blasted clean.
Uprating the driveshafts is an option, thanks for the reminder. But I have no intentions to put the S on the track. It will eventually become my retirement into Europe new steed.
TerryB
Hi guys..
So far I have established that the 2.3 diesel 7"diff (3.14) is for push in tripod shafts (no circlips). They should be 26 spline into the diff. But I haven't counted mine yet.
I have spoken to Driveshaft UK (nice guy) who knows about shafts & joints, but not diff's. He thought it would require a hybrid shaft, & would be expensive !!
So I'm now looking at the thought that maybe one of the many sierra options lobro flanged diff end shafts (with circlips) will fit the 3.14. Or that the 3.14 crownwheel & pinion could be swopped into a 7" lobro type diff.
I continue my quest.
Damian30... Do you know how many splines your spare 3.36 lobro diff shafs have ??
As I might be interested after all, that's if they are x26 spline.
Or if anyone else has any x26 spline diff lobro ends, please let me know, even if only to loan to test.
TerryB.
So far I have established that the 2.3 diesel 7"diff (3.14) is for push in tripod shafts (no circlips). They should be 26 spline into the diff. But I haven't counted mine yet.
I have spoken to Driveshaft UK (nice guy) who knows about shafts & joints, but not diff's. He thought it would require a hybrid shaft, & would be expensive !!
So I'm now looking at the thought that maybe one of the many sierra options lobro flanged diff end shafts (with circlips) will fit the 3.14. Or that the 3.14 crownwheel & pinion could be swopped into a 7" lobro type diff.
I continue my quest.
Damian30... Do you know how many splines your spare 3.36 lobro diff shafs have ??
As I might be interested after all, that's if they are x26 spline.
Or if anyone else has any x26 spline diff lobro ends, please let me know, even if only to loan to test.
TerryB.
Hello
I could be wrong not sure it has splines..? The drive shaft afaik just bolts to the flange as per standard? I can take some pics if this doesn't sound right.
This is for a Duratech conversion.? I would possibly go for a BMW unit if I was doing again. Requires custom drive and haff shafts. But gives you loads of different ratios to choose from, no LSD unless you get one from an M3.. Again expencive.
You will be wanting an LSD with 240bhp or so imho.
A cheep option would be to use an s type diff. The ratio is correct, the driveshaft ends are correct (still needs shortening) but would need custom driveshafts (are flanged ones cheaper.?) and a custom mounting. I don't think this has an LSD.
Or bite the bullet and get a refurbished 7" with new 3.15 crown wheel and LSD for £1400 or so.
It's only fair to say none of the Duratech conversion will come cheep except the engine. What are you thinking re ECU and induction.?
Thanks
Damian S3 Duratec
I could be wrong not sure it has splines..? The drive shaft afaik just bolts to the flange as per standard? I can take some pics if this doesn't sound right.
This is for a Duratech conversion.? I would possibly go for a BMW unit if I was doing again. Requires custom drive and haff shafts. But gives you loads of different ratios to choose from, no LSD unless you get one from an M3.. Again expencive.
You will be wanting an LSD with 240bhp or so imho.
A cheep option would be to use an s type diff. The ratio is correct, the driveshaft ends are correct (still needs shortening) but would need custom driveshafts (are flanged ones cheaper.?) and a custom mounting. I don't think this has an LSD.
Or bite the bullet and get a refurbished 7" with new 3.15 crown wheel and LSD for £1400 or so.
It's only fair to say none of the Duratech conversion will come cheep except the engine. What are you thinking re ECU and induction.?
Thanks
Damian S3 Duratec
Hi Damian...
They all have splines into the diff, don't they ? As there wouldn't be much drive without.. The spline count I ref to is if you remove the circlip & withdraw the short flanged shaft... How many splines on it ? Somehow I don't think it will be the same as a push in shaft number.….
I know the AJ30 is going to cost !
My AJ engine has only done 1500 miles with auto box, i have a brand new manual g-box & dm clutch, the engine is 2005 later variable inlet manifold type. I am trying to keep all that & use Emerald ecu, I've used them before & know electronics. But may reconsider later into the project. I have a 70mm tb with cable tps, so can convert that. Ex manifold has to be made up of course.
But I'm still on chassis work at the moment. In theory chassis should be rolling with new brakes, suspension & pas around easter. Then it goes back under the car.
I might have a break then from the S3. Need to respray prep other project !!
TerryB
They all have splines into the diff, don't they ? As there wouldn't be much drive without.. The spline count I ref to is if you remove the circlip & withdraw the short flanged shaft... How many splines on it ? Somehow I don't think it will be the same as a push in shaft number.….
I know the AJ30 is going to cost !
My AJ engine has only done 1500 miles with auto box, i have a brand new manual g-box & dm clutch, the engine is 2005 later variable inlet manifold type. I am trying to keep all that & use Emerald ecu, I've used them before & know electronics. But may reconsider later into the project. I have a 70mm tb with cable tps, so can convert that. Ex manifold has to be made up of course.
But I'm still on chassis work at the moment. In theory chassis should be rolling with new brakes, suspension & pas around easter. Then it goes back under the car.
I might have a break then from the S3. Need to respray prep other project !!
TerryB
Blue 30 said:
Hi Damian...
They all have splines into the diff, don't they ? As there wouldn't be much drive without.. The spline count I ref to is into the diff, not the driveshaft splines. if you remove the circlip from inside the diff & withdraw the short flanged shaft... How many splines on it ? Somehow I don't think it will be the same as a push in shaft number.….
I know the AJ30 is going to cost !
My AJ engine has only done 1500 miles with auto box, it has all ancillaries & eng bay wiring loom,, i have a brand new manual g-box & dm clutch, the engine is 2005 later variable inlet manifold type. I am going to keep all that & use Emerald ecu, I've used them before & know electronics. But may reconsider to dta or omex later into the project. I have a 70mm tb with cable tps, so can convert that. Ex manifold has to be made up of course. What ecu did you use ?
But I'm still on chassis work at the moment. In theory chassis should be rolling with new brakes, suspension & pas around easter. Then it goes back under the car.
I might have a break then from the S3. Need to respray prep other project !!
TerryB
They all have splines into the diff, don't they ? As there wouldn't be much drive without.. The spline count I ref to is into the diff, not the driveshaft splines. if you remove the circlip from inside the diff & withdraw the short flanged shaft... How many splines on it ? Somehow I don't think it will be the same as a push in shaft number.….
I know the AJ30 is going to cost !
My AJ engine has only done 1500 miles with auto box, it has all ancillaries & eng bay wiring loom,, i have a brand new manual g-box & dm clutch, the engine is 2005 later variable inlet manifold type. I am going to keep all that & use Emerald ecu, I've used them before & know electronics. But may reconsider to dta or omex later into the project. I have a 70mm tb with cable tps, so can convert that. Ex manifold has to be made up of course. What ecu did you use ?
But I'm still on chassis work at the moment. In theory chassis should be rolling with new brakes, suspension & pas around easter. Then it goes back under the car.
I might have a break then from the S3. Need to respray prep other project !!
TerryB
Blue 30 said:
Hi Damian...
They all have splines into the diff, don't they ? As there wouldn't be much drive without.. The spline count I ref to is if you remove the circlip & withdraw the short flanged shaft... How many splines on it ? Somehow I don't think it will be the same as a push in shaft number.….
I know the AJ30 is going to cost !
My AJ engine has only done 1500 miles with auto box, i have a brand new manual g-box & dm clutch, the engine is 2005 later variable inlet manifold type. I am trying to keep all that & use Emerald ecu, I've used them before & know electronics. But may reconsider later into the project. I have a 70mm tb with cable tps, so can convert that. Ex manifold has to be made up of course.
But I'm still on chassis work at the moment. In theory chassis should be rolling with new brakes, suspension & pas around easter. Then it goes back under the car.
I might have a break then from the S3. Need to respray prep other project !!
TerryB
Not sure then I thought the torque was transfered via the drive flange on the diff.. I will take a look later. I also have a set of drive flanges from a 3.64 std diff did you say these cant be fitted to your type.?They all have splines into the diff, don't they ? As there wouldn't be much drive without.. The spline count I ref to is if you remove the circlip & withdraw the short flanged shaft... How many splines on it ? Somehow I don't think it will be the same as a push in shaft number.….
I know the AJ30 is going to cost !
My AJ engine has only done 1500 miles with auto box, i have a brand new manual g-box & dm clutch, the engine is 2005 later variable inlet manifold type. I am trying to keep all that & use Emerald ecu, I've used them before & know electronics. But may reconsider later into the project. I have a 70mm tb with cable tps, so can convert that. Ex manifold has to be made up of course.
But I'm still on chassis work at the moment. In theory chassis should be rolling with new brakes, suspension & pas around easter. Then it goes back under the car.
I might have a break then from the S3. Need to respray prep other project !!
TerryB
Damian s3
Hi Damian... That's the 64 thousand dollar question. Do the short flanged output shafts, from 7" or 7.5" diff's, fit into my 7" diff that would originally have had push in shafts. Mine supposedly has 26 splines in the diff. Hence my question.... How many splines do your std or 3.3 short shafts have (on the diff end).
TerryB.
TerryB.
Edited by Blue 30 on Thursday 28th January 19:53
Blue 30 said:
Hi Damian... That's the 64 thousand dollar question. Do the short flanged output shafts, from 7" or 7.5" diff's, fit into my 7" diff that would originally have had push in shafts. Mine supposedly has 26 splines in the diff. Hence my question.... How many splines do your std or 3.3 short shafts have (on the diff end).
TerryB.
Right that I can check.. I'm off work tomorrow so will count and take a photo or 2. TerryB.
Edited by Blue 30 on Thursday 28th January 19:53
No problem answering questions via email myname @n3s.co.uk you are not the first so I have a bit of a guide of sorts. That said you seem to have it well in hand.
I am going to Noble next Friday so will report back when the IMTs have been mapped. Keep the reg and chassis no of the doner car if you can. It helps when talking to Jaguar.
Cheers
Damian
Thanks for that, I'll be in touch.
Good luck at Noble, great to go to such places.
I try to read up on new tech stuff as I need it. AJ IMT's seem to suffer from O ring failure, so make sure no air leaks before you go.
I don't have car info that engine was from, i could get it from engine number & dvla I guess. It WAS a legit buy
I shouldn't need much from Jag, as not using their brain..... Just mine...lol.
I'll be manning a stand at the NEC march show, if you're going.
TerryB.
Good luck at Noble, great to go to such places.
I try to read up on new tech stuff as I need it. AJ IMT's seem to suffer from O ring failure, so make sure no air leaks before you go.
I don't have car info that engine was from, i could get it from engine number & dvla I guess. It WAS a legit buy
I shouldn't need much from Jag, as not using their brain..... Just mine...lol.
I'll be manning a stand at the NEC march show, if you're going.
TerryB.
Morning
My engine has more miles than yours so I've already replaced all the inlet gaskets and IMT o rings.. Jaguar main dealer parts not cheep. 2 of the mounting bolts are also v expencive ( I had one missing)
It's all been apart as we alloy welded all the unneeded connectors etc in the inlet manifold. It's also powder coated crackle red now. It was also modified to fit the cable throttle body.
Cheers
Damian
My engine has more miles than yours so I've already replaced all the inlet gaskets and IMT o rings.. Jaguar main dealer parts not cheep. 2 of the mounting bolts are also v expencive ( I had one missing)
It's all been apart as we alloy welded all the unneeded connectors etc in the inlet manifold. It's also powder coated crackle red now. It was also modified to fit the cable throttle body.
Cheers
Damian
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