The Triumph Dolomite Club - Discussion Forum

The Number One Club for owners of Triumph's range of small saloons from the 1960s and 1970s.
It is currently Sat Dec 16, 2017 11:05 am

All times are UTC




Post new topic  Reply to topic  [ 350 posts ]  Go to page Previous 117 18 19 20 2124 Next
Author Message
PostPosted: Sat Jun 03, 2017 10:35 pm 
Offline
Future Club member hopefully!
Future Club member hopefully!

Joined: Tue Oct 03, 2006 8:45 pm
Posts: 11461
Location: Middlesex
Sorry to rain on your parade but have a closer look at the cam end of your rocker fingers. Looks like the cam has worn through the hardening on one of them in the pic. They do work hard. You can still get new ones for half of then as they are common to 2600's but I'd have a word with Alun if the law of sod says its the wrong ones that are worn.

you can use the valve stem seals from a SAAB 9-3 if needed too....

Also dont loose the collets. Easilly done. I have a few still to find on my garage floor and they mustn't be confused with the very similar but slightly different and more common 8V ones...

Jonners

_________________
If I haven't done it in or to a dolomite, I know somebody who has....


Top
   
PostPosted: Sun Jun 04, 2017 12:58 pm 
Offline
TDC Staffs Area Organiser
User avatar

Joined: Wed Oct 18, 2006 1:08 pm
Posts: 5424
Location: The Old Asylum
The arms need a proper clean, they don't photograph well. It looks like there's some pitting on the fingers but actually they are pretty clean, what you see is actually muck rather than pitting. I'd always banked on needing some new ones and fortunately I have 2 sets in stock, good used ones. I'll clean these up though and see how they compare.

_________________
Mark

1980 Dolomite Sprint project using brand new shell
1993 Mazda Eunos Roadster JDM S-Special Type II
2015 BMW 118d Sport


Top
   
PostPosted: Sun Jun 04, 2017 10:23 pm 
Offline
TDC Notts,Derby & Leics Area Organiser
User avatar

Joined: Sat Jun 14, 2008 10:15 pm
Posts: 203
Quote:
He suggested I try Peter Burgess who we use for some work we outsource so will make contact and see what he says. I know he's highly regarded in MG circles in particular, though whether he wants to work with a Triumph part I don't know.
Peter Burgess did some work on an 1850 head for me several years ago. Did a fine job. He is usually busy though.


Top
   
PostPosted: Mon Jun 05, 2017 8:18 am 
Offline
TDC Shropshire Area Organiser

Joined: Sun Aug 21, 2011 4:12 pm
Posts: 4272
Location: Highley, Shropshire
Quote:
Quote:
He suggested I try Peter Burgess who we use for some work we outsource so will make contact and see what he says. I know he's highly regarded in MG circles in particular, though whether he wants to work with a Triumph part I don't know.
Peter Burgess did some work on an 1850 head for me several years ago. Did a fine job. He is usually busy though.
The best ones always are!

Steve

_________________
2 door '73 Toledo with Vauxhall Carlton engine OWF 797M (The Carledo)
Vermillion (and Rust) Sprint Auto EGP 247T (The Dolomega)
'91 Cavalier 2ltr 8v auto
'95 Cavalier 2ltr 16v auto
Spectrum Auto Services, Servicing, Repairs, MOT prep. Apprentice served Triumph Specialist for 40 years and home of Maverick Triumph.PM for more info or quotes.


Top
   
PostPosted: Mon Jun 05, 2017 10:48 am 
Offline
TDC Staffs Area Organiser
User avatar

Joined: Wed Oct 18, 2006 1:08 pm
Posts: 5424
Location: The Old Asylum
Quote:
Sorry to rain on your parade but have a closer look at the cam end of your rocker fingers. Looks like the cam has worn through the hardening on one of them in the pic. They do work hard. You can still get new ones for half of then as they are common to 2600's but I'd have a word with Alun if the law of sod says its the wrong ones that are worn.

you can use the valve stem seals from a SAAB 9-3 if needed too....

Also dont loose the collets. Easilly done. I have a few still to find on my garage floor and they mustn't be confused with the very similar but slightly different and more common 8V ones...

Jonners
Aren't the 8 rockers all the same?

_________________
Mark

1980 Dolomite Sprint project using brand new shell
1993 Mazda Eunos Roadster JDM S-Special Type II
2015 BMW 118d Sport


Top
   
PostPosted: Sat Jun 10, 2017 11:44 am 
Offline
TDC Member
User avatar

Joined: Tue Oct 03, 2006 4:42 pm
Posts: 3928
Location: Forest of Dean
Quote:
Aren't the 8 rockers all the same?
No.
Image

_________________
1978 Pageant Sprint - the rustomite, 1972 Spitfire IV - sprintfire project, 1968 Valencia GT6 II - little Blue, 1980 Vermillion 1500HL - resting. 1974 Sienna 1500TC, Mrs Weevils big brown.


Top
   
PostPosted: Sat Jun 10, 2017 1:36 pm 
Offline
TDC Member
User avatar

Joined: Sun Oct 21, 2012 10:15 pm
Posts: 754
I wonder if making them different was genuine design to try and bunch all the valves up or it was just Triumph being Triumph. to have the lobe runners running offset on the lobes doesn't seem like a great idea.

_________________
1980 Dolomite Sprint Track Day Car....KLJ 895W. now redtopiffied :P

Volkswagen Golf MK3 Gti....R301UUJ. RIP 22-5-13

Volkswagen Golf MK4 TDGTI 150 MM53VNT Sold 7-8-17

BMW 320d Coupe M-Sport with factory fitted Performance Pack.

Proud TDC Member!

viewtopic.php?f=19&t=23031


Top
   
PostPosted: Sun Jun 11, 2017 9:40 am 
Offline
Future Club member hopefully!
Future Club member hopefully!

Joined: Tue Oct 03, 2006 8:45 pm
Posts: 11461
Location: Middlesex
Half of them are common to the rover 2600.....which is I guess half of a good thing...

Crucial thing is to keep the oil holes clean. Years ago this is what rogered one of my cam lobes for which I guess I blame
lack of maintenance on the part of several previous owners. Funny to think back then in the early 1980's you could pick one
up with this kind of fault for 800 quid...still went well til I sorted it and still goes well now...

I think I remember cleaning out the holes in the rockers with one of those red WD40 tubes? Also note the small holes in the rocker shaft itself that feed oil up the fingers. These are also pretty small and easily blocked.
Glad its muck and not wear....

Jonners

_________________
If I haven't done it in or to a dolomite, I know somebody who has....


Top
   
PostPosted: Sun Jun 11, 2017 11:10 am 
Offline
TDC Member
User avatar

Joined: Sat Apr 12, 2014 10:02 pm
Posts: 1806
Location: Nr Kenilworth
The offset might be because the valve spacing on the larger inlets need the cam almost above the buckets and the smaller ex valves are closer together so the arms need to "pull in" slightly.

Tony

_________________
Membership 2014047


Top
   
PostPosted: Wed Jun 14, 2017 8:37 am 
Offline
TDC Staffs Area Organiser
User avatar

Joined: Wed Oct 18, 2006 1:08 pm
Posts: 5424
Location: The Old Asylum
I had a closer look at the arms last night giving them a proper wipe off to aid inspection. On the whole they didn't look too bad, there were a couple which I was less happy with but certainly none were so worn that they'd worn through the hardening. I also inspected a spare set I had and have decided to reject those as they had some quite significant wear and pitting to several of the tips. I do have another head in the loft so I'll inspect those and see if they are any better. I'm fairly confident that I can assemble a decent set out of what I have. I think it highly unlikely that there's any NOS ones around and anyone who does have any will probably want to hold onto them!

I know you can regrind the tips though you'd need to re-harden them. I imagine though that this would completely throw out the shimming so something to avoid if at all possible. Wear of these parts is going to be an on-going problem for Sprint owners and with new ones extinct and good used ones in decline it would be good to have a solution.

Interestingly I have found a few Rover 2300/2600 ones for sale but the overall shape of the part is quite different to the Triumph part, even if the profile parts are the same.

Currently no further on with the head, it's going to Peter Burgess today but it will be a while before it comes back. I'm finding a few small jobs to do in the interim to keep me occupied.

_________________
Mark

1980 Dolomite Sprint project using brand new shell
1993 Mazda Eunos Roadster JDM S-Special Type II
2015 BMW 118d Sport


Top
   
PostPosted: Sun Jun 18, 2017 9:21 am 
Offline
Future Club member hopefully!
Future Club member hopefully!

Joined: Tue Oct 03, 2006 8:45 pm
Posts: 11461
Location: Middlesex
Interesting that you say the Rover bits are different....

I must have been misinformed about them being the same as one side of the Sprint pair.

Could you use still them on a Sprint rocker set up?

Jonners

_________________
If I haven't done it in or to a dolomite, I know somebody who has....


Top
   
PostPosted: Mon Jun 19, 2017 8:20 am 
Offline
TDC Staffs Area Organiser
User avatar

Joined: Wed Oct 18, 2006 1:08 pm
Posts: 5424
Location: The Old Asylum
I could take a punt and buy 4 of the Rover rockers to see if they might fit but actually I removed another rocker assembly off of my spare head and found the arms to be far far better than the set I had earmarked so will probably use those and therefore probably won't need the Rover ones at all.

_________________
Mark

1980 Dolomite Sprint project using brand new shell
1993 Mazda Eunos Roadster JDM S-Special Type II
2015 BMW 118d Sport


Top
   
PostPosted: Fri Jul 14, 2017 11:36 am 
Offline
TDC Staffs Area Organiser
User avatar

Joined: Wed Oct 18, 2006 1:08 pm
Posts: 5424
Location: The Old Asylum
Not much going on at the moment. Cylinder head is away at Peter Burgess for work so really waiting for that to come back.

Anyway with Photobucket now wanting to charge a small fortune for 3rd party hosting I've 'lost' all my photos on the thread here. Fortunately I've also had them on Google Drive. Though you cannot see them in the same was as on here you'll find all my restoration pictures in the link below. Actually there's many more pictures here than on the thread. I'm not currently in the mood for re-linking all the pictures sorry.

https://photos.app.goo.gl/y160jyBrXIINmtZQ2

Enjoy!

_________________
Mark

1980 Dolomite Sprint project using brand new shell
1993 Mazda Eunos Roadster JDM S-Special Type II
2015 BMW 118d Sport


Top
   
PostPosted: Thu Jul 27, 2017 3:38 pm 
Offline
TDC Staffs Area Organiser
User avatar

Joined: Wed Oct 18, 2006 1:08 pm
Posts: 5424
Location: The Old Asylum
Carbs have been refurbished. All linkages, bodies etc have all been bead blasted and re-plated where necessary. A full rebuild kit has been fitted and I've opted to go for non-wax stat jets which have a slightly different linkage.

Image

Image

Image

Image

Image

I think they look rather nice! Sorry for the flashy photos, I have some nice seamless backdrop at work and thought why not.

_________________
Mark

1980 Dolomite Sprint project using brand new shell
1993 Mazda Eunos Roadster JDM S-Special Type II
2015 BMW 118d Sport


Top
   
PostPosted: Thu Jul 27, 2017 8:28 pm 
Offline
TDC Member

Joined: Mon Dec 12, 2016 9:53 pm
Posts: 391
Location: Harrow Middlesex
they've come up nice


Top
   
Display posts from previous:  Sort by  
Post new topic  Reply to topic  [ 350 posts ]  Go to page Previous 117 18 19 20 2124 Next

All times are UTC


Who is online

Users browsing this forum: No registered users and 1 guest


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
cron
Powered by phpBB® Forum Software © phpBB Limited