Dolomite Sprint engine rebuild

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Nico Deltgen
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Dolomite Sprint engine rebuild

#1 Post by Nico Deltgen »

Hy,
I am Nico from Luxembourg ,we are running a Dolomite Sprint from 1977, at some local events for classic cars. However we have been facing some issues with engine overheating, which we got under control with a supplementary electrical water pump and an electrical fan. However we feel that the engine is not functioning at it’s optimal power. So we decided to rework the engine. I am looking for advices and experiences in our dolomite club.
We are searching for shops offering the various services on all engine components, would it be rework or replacements, we have not yet made up our mind on rebuilding the engine ourselves, hence having the rework of engine components done by specialists or subcontracting the whole engine rework. We are not looking for a super tuned engine for racing but an engine with decent reliable performance. I am thankful for any recommendation, experience and address

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cleverusername
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Re: Dolomite Sprint engine rebuild

#2 Post by cleverusername »

Well the obvious question is whether you have run a compression test to check for wear? If so, what figures did you get?
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SprintV8
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Re: Dolomite Sprint engine rebuild

#3 Post by SprintV8 »

Mad Mart for a standard Rebuild.

Ken Clarke for a more spirited Rebuild.

Sure there’s others.
2011 Mini Clubman John Cooper Works. S Daily Driver.
1980 Dolomite Sprint with a touch of BLTS
Balanced Lightened and Tweaked 13B Rotary and SsuperCharged.
Back in my possession 22 September 2019.
Rebuilding the Sprint time taken so far, 111Hrs@15/12/2020
212Hrs @31/12/2021
352 @ 28/11/2022
455Hrs @ 20/10/2023
565Hrs @ 07/12/2024
This is time taken at the Sprint not necessary time worked.

Member TDC no 0471

Project 13B Sprint now back on..
No Pistons No Cams how’s it gonna Run Brap Brap?
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xvivalve
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Re: Dolomite Sprint engine rebuild

#4 Post by xvivalve »

Jon Jackson is probably the nearest to south coast ports/Luxembourg...
Nico Deltgen
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Re: Dolomite Sprint engine rebuild

#5 Post by Nico Deltgen »

@ cleverusername
No we have not checked compression, as it is obvious that the engine is not running at its optimum,
is burning oil ( nice blue smoke coming out of the exheaust) and we made the decision to rework the engine.
That's why I try to collect advices and experiences
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soe8m
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Re: Dolomite Sprint engine rebuild

#6 Post by soe8m »

Nico Deltgen wrote: However we have been facing some issues with engine overheating, which we got under control with a supplementary electrical water pump and an electrical fan.
That's not under control..

I can advise your local machine shop. There's a list of modifications you can do to have a healthy engine without the need of extra parts and pumps etc. or solve overheating issues by a 100x100cm radiator. Important is to use the correct parts and not just order bearings, chains and tensioners what is available around the corner. Some parts have to be from a specific brand to have a lasting engine.

It's not that difficult but there are some things to know what makes (engine) life easier.

Jeroen
Classic Kabelboom Company. For all your wiring needs. http://www.classickabelboomcompany.com
cleverusername
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Re: Dolomite Sprint engine rebuild

#7 Post by cleverusername »

Nico Deltgen wrote: Mon Jul 05, 2021 9:29 pm @ cleverusername
No we have not checked compression, as it is obvious that the engine is not running at its optimum,
is burning oil ( nice blue smoke coming out of the exheaust) and we made the decision to rework the engine.
That's why I try to collect advices and experiences
To be fair you didn't make that clear in your original post, you said that you felt you engine was not running at optimal power, without mentioning it was burning oil.

All I was doing was making sure you had eliminated other culprits before starting an expensive engine rebuild.
Nico Deltgen
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Re: Dolomite Sprint engine rebuild

#8 Post by Nico Deltgen »

@ soe8m
Would you have a list of those parts with the correct source and would you share these infos with me
Thanks
Nico
Nico Deltgen
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Re: Dolomite Sprint engine rebuild

#9 Post by Nico Deltgen »

@ SprintV8
Do you have contact details or websites, so that I could contact these guys
regards
Nico
triumphdolomiteuk
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Re: Dolomite Sprint engine rebuild

#10 Post by triumphdolomiteuk »

Nico Deltgen wrote: Wed Jul 14, 2021 10:29 am @ SprintV8
Do you have contact details or websites, so that I could contact these guys
regards
Nico
Ken Clarke; http://www.historictouringcars.org/
Mad Mart is a regular Forum contributor, he can be contacted via PM or email.
Jon Jackson as above (Forum username Trackerjack).
Please note that I am simply a Forum administrator, so please do not contact me unless your question is regarding your Forum account. For general enquiries regarding the Club and its services (membership queries, questions about spares, lapdancing etc) please see https://forum.triumphdolomite.co.uk/vie ... hp?t=20098

Are you enjoying using our forum? If so why not support the owners club which provides it by joining The Triumph Dolomite Club? Help us to preserve these great cars for future generations.
Club membership costs just £30 for one year or £55 for two years. See https://forum.triumphdolomite.co.uk/vie ... =4&t=37824 for details.
Nico Deltgen
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Re: Dolomite Sprint engine rebuild

#11 Post by Nico Deltgen »

thanks
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TahitiSPRINT
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Re: Dolomite Sprint engine rebuild

#12 Post by TahitiSPRINT »

Hello Nico and welcome to this forum!

A few years ago, Hans at BCCP.nl in the Netherlands put together my standard Sprint engine. With the correct parts and some minor modifications to improve reliability as Jeroen stated above, my engine made 132 bhp at the wheels on the dyno test rig. That is with standard cam and SU HS6’s.

See this post: forum.triumphdolomite.co.uk/viewtopic.18168
and this video: sprint.smugmug.com/Cars/Standard Sprint

If you’re interested, Hans can be contacted on here (forum name Hans ten Broeke) or drop me a PM for his email and tel.nr.


Hope this helps!
Ronald
Club Triumph Holland - Dolomite Registrar




www.triumphowners.com/tahitisprint
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