The Triumph Dolomite Club - Discussion Forum

The Number One Club for owners of Triumph's range of small saloons from the 1960s and 1970s.
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 Post subject: Re: Froggy dolly 2
PostPosted: Sun Jan 06, 2019 9:18 am 
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Joined: Tue Jun 28, 2011 4:43 pm
Posts: 55
Location: north of France
ok,
but with the electric fan , it looks there's no room to make à deeper cooler , and the holes to screw the cooler on the shell are very close to the cooler

let's go further with silly questions :
Is there a way to modify steering rack , to have a less demultiplicated one ?
I know one man in France is doing that , but Don't know where to find parts


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 Post subject: Re: Froggy dolly 2
PostPosted: Mon May 27, 2019 9:03 pm 
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Joined: Tue Jun 28, 2011 4:43 pm
Posts: 55
Location: north of France
And now a question for the jackshaft
we are rebuilding the engine, and when fititing the jackshaft , it turns free
but whent we are screwing the fork which prevent the jackshaft from moving , it is blocked and refuse to turn ( without waterpump and oil pump) .
Does someone know where this problem come from ?

PS : the parts are the original parts which were ok when dismantling the engine .


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 Post subject: Re: Froggy dolly 2
PostPosted: Sun Oct 06, 2019 9:42 am 
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Joined: Tue Jun 28, 2011 4:43 pm
Posts: 55
Location: north of France
Some news about the sprint
we did an engine rebuild with balanced crankshaft , new pistons with weight setup .
The engine turned well , but it seems the Payen head gasket is already failed(less than 800 kms) , despite the waterpump setup ( as the workshop manual) and the electric fan . i didn't rev to more than 3500rev/min for the moment .

the water coolant level increases in the tank , and i see small bubbles when i accelerate manually.

before doing anything more , i would like to obtain maximum feedbacks of guys who experienced sprint rebuild :
-torque order
-torque value
-quality gasket
-modifications or improvements
-tricks that can help …

have a nice Week end


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 Post subject: Re: Froggy dolly 2
PostPosted: Mon Oct 07, 2019 9:31 pm 
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Joined: Sun Mar 16, 2008 2:52 pm
Posts: 2100
James and I have been working on a new head gasket for his Sprint.
So on the basis of our recent work ...

* We used the torque order in the Sprint workshop manual page 12-16 section 12.29.27

* The torque setting we used was the one on page 06-1 of 55 ft.lbs or 7.6 Kgf. m

* We increased the torque settings gradually from 20 ---> 30 ---> 40 ---> 50 ---> 55 ft.lbs on all the nuts and bolts in the specified order.

* After starting the engine and running it for a few minutes we let it cool and rechecked the torque settings.

* We rechecked the torque 1 week later by slackening each nut & bolt 1/6 turn in turn and then retorquing.

* James found a good Payen gasket. This has worked well.

* James did ask the machine shop for a weld of the corrosion and a minimum skim to restore flatness of the head. The block looked fine with a straight edge.

Did you re-torque your cylinder head afterwards ?

We have fuelling problems right now, but the head side of things looks good still.

HTH,
A Bientot,
Antoine.


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 Post subject: Re: Froggy dolly 2
PostPosted: Mon Oct 07, 2019 10:24 pm 
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Joined: Tue Oct 03, 2006 4:48 pm
Posts: 8090
Location: Winscombe, North Somerset, England
Tighten the studs/bolts in three passes working gradually to 58 ft lbs minimum. Some guys go to 60 ft lbs. Start with the centre stud and work outwards then the centre bolt & work outwards. Do this for each pass. Use a little lubricant on the threads to help achieve the correct torque figure.

_________________
Sprintless for the first time in 35+ years. :boggle2:

2007 Porsche Boxster S


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Grammar:
The difference between knowing your sh#t and knowing you're sh#t.

Schedule: Pronounced "Shedule" not "Skedule"!


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 Post subject: Re: Froggy dolly 2
PostPosted: Wed Feb 12, 2020 4:25 pm 
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Joined: Tue Jun 28, 2011 4:43 pm
Posts: 55
Location: north of France
i've put the head off last week
very surprised to see the gasket is not broken ... so i don't understand why the coolant level increase so often
i found a little bit of jelly ( mix of oil and coolant) at the top of the rocker cover

if you have possible explanations, don't hesitate to share

is there a way to obtain a coolant bottle cap which works at the right pressure ? mine looks to open before the 13 PSI


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