The Triumph Dolomite Club - Discussion Forum

Hi,

I have a very standard 1980 dolomite sprint and i have bought a pair of DCOE 45 Weber carbs to fit.

Im gonna buy a MANGOLETSI. POLISHED MANIFOLD to mate the webers.

Now id like to ask a couple of questions about how best to go about this conversion:-

Should I fit an electronic fuel pump? I think webcon do one for webers at: http://www.webcon.co.uk/shop/shopdispla ... ssure...or do you guys suggest a better solution?

What should I do about the linkage Aldon automotive can supply a linkage but no idea on the specification (ie 2 cables or 1 cable etc)?

Like I said my dolly is standard so it still uses the mechanical fan would you advise going to an electric fan with webers? If so what manufacturer do you suggest and size of the fan?

If you can offer any further points of advice that would be great.

Thanks alot and look forward to discussing this with you guys.

Chris

If the cooling system is good order then you shouldn't need to fit an electric fan. If you do fit an electric fan then the cooling system must be in good order. I'd put the temperature sensor at the bottom because being the coolest point that'll be where to spot the first signs of any overheating. There's been debate on where to put the sensor so that would be your call. If you fit an electric fuel pump then you might need a regulator if the pump delivers too much fuel to the carbs. I've known that to be the case with SUs. I don't know with Webers. I'm sure somebody more knowledgable can advise you better. I hope you bought your Webers brand new. It can work out cheaper to buy new ones than getting secondhand ones sorted.

_________________
Toledo Man

West Yorkshire Area Organiser
Meetings take place on the first Wednesday of the month at 8.00pm at The Old Brickworks, Wakefield Road, Drighlington, Bradford, BD11 1EA

2003 Volvo XC90 D5 SE (PX53 OVZ - The daily driver)
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1991 Toyota Celica GT (J481 ONB - a 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), NYE 751L (1972 Dolomite 1850 auto) plus 5 Acclaims and that's just the Triumphs!

Check my blog at http://triumphtoledo.blogspot.com
My YouTube Channel with a bit of Dolomite content.

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

Sorry to contradict; but, I don't follow that logic Surely, if that's the coolest part - the rest is already hotter ?... Therefore, any remedial action here would/could be too late for the hotter parts. Please correct me if I've missed something glaringly obvious ?

IMO, The fan only needs to come on when the cooling system gets too hot. This is generally when the radiator is not cooling the system down enough.
Best place to check if rad is cooling enough is where the coolant exits! (makes sense to me!)
My sensor is on the bottom hose,works great.

Assuming this will be a fast road Sprint then just adding the 45s will be pretty much a waste of time, you'll probably gain a little performance & lose a fair bit of MPG. You'll get a bigger performance gain by replacing the standard exhaust system with a S/S sports system (which is pretty much a must on Sprints). If you're fitting bigger carbs then you need to fit an uprated camshaft. The carbs will be trying to push more mixture into the cylinders but, with a std cam, the valves will still be opening for the same duration so the cylinders won't really get the benefit of the extra go gas, & you need a freer flowing exhaust to get the gases away.

The leccy fuel pump you mention should be fine for what you want but you will need to install a fuel pressure regulator as well (Filter King seems to be the most popular). Webers only need approx. 2.5-3 psi. The only reason I changed to a leccy cooling fan was to take a bit of the load off the engine, also I went to a leccy waterpump which helps with the cooling but probably a bit ott for a road Sprint.

Don't forget, if you're looking for more speed then you need to be looking at suspension & brake upgrades at the same time (or sooner).

_________________
Sprintless for the first time in 35+ years. ... Still Sprintless.

Engines, Gearboxes, Overdrives etc. rebuilt. PM me.


1997 TVR Chimaera 450

It doesn't matter if the sensor is on the inlet or the outlet of the rad. You just set the stat accordingly.

_________________
Sprintless for the first time in 35+ years. ... Still Sprintless.

Engines, Gearboxes, Overdrives etc. rebuilt. PM me.


1997 TVR Chimaera 450

Hi Guys,

Thanks alot for all yea comments and help.

Ive bought new webers which look very nice.
My dolly has Phoenix Exhaust from jigsaw very nice and straight through.
Im gonna look at getting a Filter King fuel pressure regulator and the electric fuel pump I mentioned.
My cooling system is spot on although I may look at silicon hoses and an electric fan

My objective with this car is to bring it upto fast road state with max performance for those sunny days next year. I also want this car to have potential on the track with my plans to get into track days.

I agree a none-standard camshaft would be ideal but what would you suggest I know Newman cams have some options.

Do you guys have any advice on sourcing the linkage or suggest a setup I should go for.

On the suspension side im looking as AVO shocks and springs all round and get all those original bushes replaced with polybush.

Thanks

Chris

OK Chris, so you have a very standard 1980 dolomite sprint...with a non-standard exhaust.

The exhaust is always a good place to start to release a few extra horses. I would suggest going for the STR91 (or equivalent) which goes well with the 45s and is still a pleasure to drive on normal roads. I am running AVOs with 400lb springs on the front & 200lb on the rear. You really ought to consider Jon's front vented disc mod. especially if you are thinking of tracking your Sprint. Very good stopping power, no brake fade & quite a low outlay.

_________________
Sprintless for the first time in 35+ years. ... Still Sprintless.

Engines, Gearboxes, Overdrives etc. rebuilt. PM me.


1997 TVR Chimaera 450

Thanks Martin for ya help I will give newman a call on the STR91 specs and price. ON the AVOS did you go for 2 1/4" or 2 1/2" spring seats? How do I find out more on Jon's front vented disc mod? IS this documented anywhere?

By the way I remember talking to you about that Magenta sprint you did..still wish I had bought that car do you know how its doing or have you got a new project now?

Thanks again.

Chris

Strangely, I was looking at the vented way thread last night;
viewtopic.php?f=4&t=8662&st=0&sk=t&sd=a
Pictures have mostly vanished now though. TJ? Any help?

TRID/290/400 PH3 Tarmac Rally Sprint Cam. £235 +vat. Pretty close to STR91 spec.

I think I went for 2½" springs but I'm not 100% sure.

The Magenta Sprint now resides in Stockport and is being very well cared for. I have just about finished a Sapphire Blue Sprint if you're interested.

viewtopic.php?f=19&t=17127



PM 'trackerjack' for more info. on the vented disc conversion or there's a small write-up on my web site.

http://www.dolomitesprint.com

_________________
Sprintless for the first time in 35+ years. ... Still Sprintless.

Engines, Gearboxes, Overdrives etc. rebuilt. PM me.


1997 TVR Chimaera 450

If I had a choice Sapphire would be mine, how on earth do you do such a good job so quickly Mart?
Oh thanks for the brake mention I have started a new thread and sorted out the pictures which had to be jumbled after poxy Piston Head forum users ran riot after seeing one of my pictures and going mad with photo shop, the tedious little tossers.

_________________
track action maniac.

The lunatic is out................heres Jonny!

As an alternative, STR91 from Moss @ 230 inc VAT, comes in a Kent Cams box.