The Triumph Dolomite Club - Discussion Forum

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PostPosted: Wed Jul 10, 2019 4:55 pm 
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Location: Ayrshire, Scotland
On the back of the 1850 cylinder head there is this cover, ringed in my photo. What is it for? Mine appears to be leaking oil at the bottom edge. Do all five bolts have to be removed to get it off? Are there any booby traps like springs or ball bearings inside?


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(MGB GTV8, BMW Z3 2.2, and Dolomite 1850HL)
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PostPosted: Wed Jul 10, 2019 6:07 pm 
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It's the coolant transfer housing gasket gone, if I remember correctly there is no surprises when removed and all bolts need removing.

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PostPosted: Thu Jul 11, 2019 9:40 pm 
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As Mahoney says, no problem in changing the cover but there are 2 types of gasket : Early and Late.
The gasket only seals the water-ways though so if there is oil leaking its probably coming from higher up on the head, like the cam cover gasket or the half-moon seal.
Tony.


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PostPosted: Thu Jul 11, 2019 10:27 pm 
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Shout if you need a gasket, I have a few!

Though I don't think it should be leaking oil...


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PostPosted: Fri Jul 12, 2019 8:06 am 
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As Mahoney says, no problem in changing the cover but there are 2 types of gasket : Early and Late.
The gasket only seals the water-ways though so if there is oil leaking its probably coming from higher up on the head, like the cam cover gasket or the half-moon seal.
Tony.
Hmm. It's not easy to see back there. All I know is that there were oil drops on the starter motor and i assumed it was coming from that plate. Will try to have a better look with a mirror.

Although honestly that's the least of the oil leaks. I rebuilt this engine and gearbox 18 months ago with all new gaskets and oil seals, but it makes a real mess on the drive, mostly from the bell housing. I think it is the back of the engine that is the culprit, but it could be the front of the gearbox. Whatever, the only way to fix it is to remove the lump again. Joy.

It will have to wait. The car is booked in to the Silverstone Classic weekend at the end of the month with the TSSC. 380 miles each way should test it out properly!

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(MGB GTV8, BMW Z3 2.2, and Dolomite 1850HL)


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PostPosted: Fri Jul 12, 2019 8:37 am 
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Location: Highley, Shropshire
Quote:
Quote:
As Mahoney says, no problem in changing the cover but there are 2 types of gasket : Early and Late.
The gasket only seals the water-ways though so if there is oil leaking its probably coming from higher up on the head, like the cam cover gasket or the half-moon seal.
Tony.
Hmm. It's not easy to see back there. All I know is that there were oil drops on the starter motor and i assumed it was coming from that plate. Will try to have a better look with a mirror.

Although honestly that's the least of the oil leaks. I rebuilt this engine and gearbox 18 months ago with all new gaskets and oil seals, but it makes a real mess on the drive, mostly from the bell housing. I think it is the back of the engine that is the culprit, but it could be the front of the gearbox. Whatever, the only way to fix it is to remove the lump again. Joy.

It will have to wait. The car is booked in to the Silverstone Classic weekend at the end of the month with the TSSC. 380 miles each way should test it out properly!
There is a known problem with replacement rear main oil seals on slant engines, insofar as the wire ring doesn't have sufficient tension. There are a couple of potential cures on here by Jeroen and JT. Or get one from a known supplier of decent ones, I believe Robsport is well thought of in this instance.

The gearbox front seal is a less likely culprit unless a) it's an early 3 rail box, which shouldn't be in your car and b) you habitually park it nose down on a steep slope!

I know this doesn't help much when you are STILL facing an engine out situation, please accept my sympathy, but not too much, YOU bought a Dolomite!

Steve

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2 door '73 Toledo with Vauxhall Carlton 2.0 8v engine OWF 797M (The Carledo)
'78 Sprint Auto with Vauxhall Omega 2.2 16v engine 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 45 years and home of Maverick Triumph.PM for more info or quotes.


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PostPosted: Fri Jul 12, 2019 11:47 am 
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The last time I had the engine out of the 1850, I replaced the rear crankshaft oil seal (a while-it-was-accessible job) which had been supplied by S&S Preparations. They're TR7 specialists but there's some overlap with the 1850 (and the Sprint to a lesser extent). Robsport and TD Fitchett are other suppliers I would recommend. The "gearbox out" method might be preferable to taking the engine out.

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Meetings take place on the first Wednesday of the month at 8.00pm at The Old Brickworks, Wakefield Road, Drighlington, Bradford, BD11 1EA
1972 Dolomite 1850 auto (NYE 751L - The rolling restoration)
2008 Citro├źn C4 Grand Picasso 2.0 HDi Exclusive (MA08 WCL - the workhorse)
1995 BMW 318i (M265 PNC - Project Bimmer, the weekend car)
1991 Toyota Celica GT (J481 ONB - the new project car)
Former stable of SAY 414M (1974 Toledo), GRH 244D (1966 1300fwd), CDB 324L (1973 1500fwd), GGN 573J (1971 1500fwd), DCP 625S (1977 Dolomite 1300) & LCG 367N (1975 Dolomite Sprint) plus 5 Acclaims and that's just the Triumphs!

Check my blog at http://triumphtoledo.blogspot.com

"There is only one way to avoid criticsm: do nothing, say nothing and BE nothing." Aristotle


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PostPosted: Fri Jul 12, 2019 7:50 pm 
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Location: Ayrshire, Scotland
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I know this doesn't help much when you are STILL facing an engine out situation, please accept my sympathy, but not too much, YOU bought a Dolomite!

Steve
Ha, you're wrong there Steve. I was given the car for nowt. Dry stored for 24 years. Only two owners from new, the second one being my brother-in-law who purchased it in 1980 when it was a mere three years old.


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(MGB GTV8, BMW Z3 2.2, and Dolomite 1850HL)
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PostPosted: Sat Jul 13, 2019 11:09 pm 
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Joined: Sun Aug 21, 2011 4:12 pm
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Location: Highley, Shropshire
Well they say anything free is worth what you pay for it, but you have certainly added considerable value since then!

Steve

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2 door '73 Toledo with Vauxhall Carlton 2.0 8v engine OWF 797M (The Carledo)
'78 Sprint Auto with Vauxhall Omega 2.2 16v engine 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 45 years and home of Maverick Triumph.PM for more info or quotes.


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