Search found 31 matches

by doffo25
Sun Sep 02, 2018 2:03 pm
Forum: Series 3
Topic: Compression test interpretation
Replies: 3
Views: 349
Great Britain

Re: Compression test interpretation

Thanks guys very much for your replies. Yes the engine sounds good. I am relieved as I thought I was going to be told that the figures were suspiciously low!

best

David
by doffo25
Sat Sep 01, 2018 12:58 pm
Forum: Series 3
Topic: Compression test interpretation
Replies: 3
Views: 349
Great Britain

Compression test interpretation

Hi All.....Im trying to decide whether I need to haul my engine out so Ive just done a dry compression test on my US low compression LB suffix v12 (1972 56kmiles) and achieved these results: Bank A 1-6 100-105-100-100-95-100psi Bank B 1-6 115-120-118-115-110-115psi Firstly am I correct that this eng...
by doffo25
Sat May 26, 2018 3:58 pm
Forum: Series 3
Topic: Rear engine mount
Replies: 3
Views: 471
Great Britain

Re: Rear engine mount

Thanks Jerome......ive now replaced the rubbers and clearance is now good! Managed to take mount off with exhausts on......just by dropping front exhaust connection gave enough clearance. And talking of short cuts heres a tip. If you need to gain access to the top of box why not simply chisel a slit...
by doffo25
Tue May 22, 2018 2:20 pm
Forum: Series 3
Topic: Rear engine mount
Replies: 3
Views: 471
Great Britain

Re: Rear engine mount

I dont know whats in gearbox oil but it appears that the leak had almost completely dissolved all the rubber spring seats causing the gearbox to drop......
by doffo25
Fri May 18, 2018 8:01 am
Forum: Series 3
Topic: Rear engine mount
Replies: 3
Views: 471
Great Britain

Rear engine mount

Whilst replacing o rings in my selector fork rods I noticed that all four nuts to front drive shaft flange were loose. Also that the clearance between driveshaft yokes and crossmember is only 8mm. If I shake gearbox the driveshaft knocks on the crossmember. The car has not been driven since '81 so I...
by doffo25
Sat Mar 17, 2018 12:55 pm
Forum: Technical
Topic: pas rebuild problem
Replies: 3
Views: 324
Great Britain

Re: pas rebuild problem

OK point taken...thanks Steve
by doffo25
Fri Mar 16, 2018 4:46 pm
Forum: Technical
Topic: pas rebuild problem
Replies: 3
Views: 324
Great Britain

Re: pas rebuild problem

Yes that was a daft question. Having stripped it all down again I discovered there is nothing wrong with my pinion valve.Because the car was jacked up, no resistance was felt by the pinion torsion bar hence no assistance provided... Ane rack seal leak was caused by excess clearance between the rack ...
by doffo25
Sat Mar 10, 2018 12:26 pm
Forum: Technical
Topic: pas rebuild problem
Replies: 3
Views: 324
Great Britain

pas rebuild problem

Hello and good morning (tho it hasnt been) Ive recently rebuild my steering rack and pump (including a pressure reduction kit from Borgeson)....tho not touched the valve and pinion assy. When I start the engine the steering wheel violently oscillates back and forth 10deg for a while (car is jacked u...
by doffo25
Tue Nov 14, 2017 6:58 pm
Forum: Technical
Topic: Rebuilding PAS,how far to go
Replies: 4
Views: 518
Great Britain

Re: Rebuilding PAS,how far to go

Thanks Hugo for the thought but Im trying to keep it original.............I will however look for an owl to wear as it gives you a sense of gravitas and apparent wisdom....

David
by doffo25
Sun Nov 12, 2017 2:48 pm
Forum: Technical
Topic: Rebuilding PAS,how far to go
Replies: 4
Views: 518
Great Britain

Re: Rebuilding PAS,how far to go

Well I have now taken my pump apart and for the benefit of other inexperienced people I can answer my own question! If you go to the trouble of replacing the rack seals then do also strip the pump (its fairly straightforward) as if its like mine itll be full of crap and the seal and o-rings will hav...
by doffo25
Sat Nov 11, 2017 4:13 pm
Forum: Technical
Topic: Rebuilding PAS,how far to go
Replies: 4
Views: 518
Great Britain

Rebuilding PAS,how far to go

I have just removed my rack, tower and pump in order to replace seals in the leaking rack and to re-shim the inner ball joints. (Ive also just ordered a pressure reduction kit from Borgeson to improve the steering feel and reduce chances of more leaks.....tho Ive since read that Dick Maury dosent ag...
by doffo25
Thu Sep 07, 2017 7:33 pm
Forum: Technical
Topic: Picture frame accident damage?
Replies: 0
Views: 573
Great Britain

Picture frame accident damage?

Hi All Just remove decades of grime from front suspension areas in readiness to rebuild when I came across this..... At the bottom vertical of picture frame (just above the lower fulcrum shaft block) is some damage to the frame and Im assuming because of that (?) some crude camber shims (about 4mm) ...
by doffo25
Fri Aug 11, 2017 6:01 pm
Forum: Technical
Topic: radius arm bush orientation
Replies: 3
Views: 556
Great Britain

Re: radius arm bush orientation

Oh thats great.....so instead of going out to the workshop and having to hack out my new bush Im simply going to open a bottle of red :bigrin:

Thank you very much for your replies.

best

David
by doffo25
Fri Aug 11, 2017 2:51 pm
Forum: Technical
Topic: radius arm bush orientation
Replies: 3
Views: 556
Great Britain

radius arm bush orientation

Ive just been congratulating myself on having successfully pressed a new large rubber bush into the radius arm using only a vice.....worked very well......only to discover that the two rubber holes arent aligned longitudinally as they should be but at a random 45deg ish....grrrr Am I likely to encou...
by doffo25
Fri May 12, 2017 8:03 am
Forum: Technical
Topic: input shaft nut torque
Replies: 18
Views: 2536
Great Britain

Re: input shaft nut torque

Thanks all for your much appreciated help.....if the design is flawed and I know I am as well ,,,,I will take it to a pro to check over and let you know the outcome...

best

David
by doffo25
Wed May 10, 2017 3:25 pm
Forum: Technical
Topic: input shaft nut torque
Replies: 18
Views: 2536
Great Britain

Re: input shaft nut torque

Thanks Bill for the detailed info and great sectional diagram. How much torque roughly does it take to compress the spacer? When I inadvertantly went past mark by 1/8th turn I had single finger on spanner. If I put 120lb.ft on it I would go way way past the mark. Could this "loose nut" be simply due...
by doffo25
Tue May 09, 2017 8:23 pm
Forum: Technical
Topic: input shaft nut torque
Replies: 18
Views: 2536
Great Britain

Re: input shaft nut torque

Yes Steve pretty sure I had tightened nut correct no of revs. The extra 1/8th turn was as easy to turn as tightening up to the mark. Is there any harm in tightening nut up until resistance is felt ie up to the spacer?
by doffo25
Tue May 09, 2017 5:58 pm
Forum: Technical
Topic: input shaft nut torque
Replies: 18
Views: 2536
Great Britain

Re: input shaft nut torque

Thanks Steve for your reply. No, there is no castellated nut...tho the nut looks like some sort of anti vibration (?) nut. The nut appeared to continue to tighten at a constant torque. So presumably the collapslible spacer compresses to provide the required bearing preload? Just seem odd that it tak...
by doffo25
Tue May 09, 2017 3:10 pm
Forum: Technical
Topic: input shaft nut torque
Replies: 18
Views: 2536
Great Britain

input shaft nut torque

Hi All Im currently rebuilding the irs on my '72 roadster and am now attempting to replace the pinion oil seal which is leaking. Reading the various posts the job appeared fairly straight forward. I found the largest spanner I could to undo the input shaft nut (having marked its position), jammed th...
by doffo25
Tue Nov 22, 2016 7:12 am
Forum: Technical
Topic: repair or replace?
Replies: 8
Views: 1572
Great Britain

Re: repair or replace?

Thank you Christopher for your advice and contact details.....ill get onto it! Much appreciated.

regards

david