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A question for 1300 & 1500cc owners -Does your car have deflector boards fitted http://forum.triumphdolomite.co.uk/viewtopic.php?t=36784 |
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Author: | Carledo [ Thu Jul 15, 2021 9:07 pm ] |
Post subject: | Re: A question for 1300 & 1500cc owners -Does your car have deflector boards fitted |
With E5 and soon to be E10 fuel the norm, the problem of fuel vaporisation on carburettored cars is more than it was in the days of old fashioned leaded 4 star. Purely because ethanol added fuels evaporate at a significantly lower temperature than the old stuff. So I can envisage a number of cures, 1, fit fuel injection, this is expensive in installation and detracts from originality, but it's permanent and gives better performance, reliability and improved fuel economy. And because the fuel is constantly circulating, it's not in the rail long enough to boil, so the problem is solved. 2, get some louvres cut into the bonnet, at the back, near the bulkhead. Again, not cheap, especially when you take the painting into consideration. And not exactly original either. But they will let the hot air that would normally be stalled in front of the bulkhead out, so alleviating the fuel boiling problem and they certainly look cool as a cucumber! 3 Pop the bonnet when stationary in traffic. This really DOES work, costs nothing and doesn't detract from originality. I can testify from personal experience and experimentation that nothing bad will happen. Even driving with the catch released is not a problem till you get some speed up. At around 60mph the pressure under the bonnet will start to overcome the pressure (and weight of the bonnet itself) above it and, as if by magic, the bonnet will start to lift a bit. At around 85mph the bonnet rear edge will get up to around half way up the screen but seems to stall at this point when the pressure on both sides equalises. So, unless you are less than 5ft tall, you're probably OK! Steve |
Author: | jackharper [ Wed Jul 21, 2021 9:11 am ] |
Post subject: | Re: A question for 1300 & 1500cc owners -Does your car have deflector boards fitted |
Quote: Quote:
My dolly 1300 had it fitted, my toledo 1300 does not, in my experience the difference is negligble and both cars run a little too cold if anything. This may just be because they take ages to warm up unlike modern, alloy block engines which are run quite lean
My 1974 Triumph Toledo 1300 engine used to run cold too, and take a long time to warm up, until I substituted an 88 deg.C thermostat (the original 82 deg. C thermostat was actually opening at 72 deg.C) and retro-fitted a Kenlowe thermostatically-controlled electric fan, in place of the V-belt driven fan, in circa 1981/82. Once the engine warmed-up to running temperature, the heater & demister outputs were beautifully warm, even when snow was on the ground. |
Author: | Richard the old one [ Thu Jul 22, 2021 8:45 pm ] |
Post subject: | Re: A question for 1300 & 1500cc owners -Does your car have deflector boards fitted |
I believe the idea is that by blanking off some of the space either side of the radiator it will force more air to flow through the radiator and so improve the cooling. I have just come back from having a few days based in Plymouth. I took my green 1500 Dolomite and I did not have any overheating problems as I did not get held up in traffic which is when we tend to get problems. I think popping the bonnet is the best way forward if you see the engine is starting to overheat. |
Author: | triumphtoledo [ Thu Aug 05, 2021 6:02 pm ] |
Post subject: | Re: A question for 1300 & 1500cc owners -Does your car have deflector boards fitted |
These fibre boards made their first appearance on the face-lift 1975 on Toledos with the black grills. I have never seen them on earlier cars. My P plate Toledo 4-door has them. None of my 73/74 cars has them. When Toledo morphed into square lamped Dolomites, they also inherited the fibre boards - my P plate 1500 square lamped Dolly had them fitted but they fell apart when I took the rad out and so have not been replaced. I have had quite a few 1500HLs and none of them had the boards fitted, so I presume they were just for the square lamped cars. Interestingly, the square lamped Dolomites had a single horn, as opposed to the Toledo and Dolomite/Sprint's twin horns. The parts books confirm my findings: The quad lamped 1500TC did not have the fibre boards after the '75 facelift Toledos 4-door 1300cc cars had the fibre boards from the '75 facelift - so Coventry built cars only Dolomite 1300 and 1500cc Low Line square lamped cars had the fibre boards but the 1981 parts book states they were not fitted to the 1500HL. I think the reason for their fitment is to deflect water away from the engine bay, rather than air. With the square lamped cars, there is a larger grille area through which water can enter, compared to the twin lamped HL cars. Hope this helps. Rob |
Author: | Richard the old one [ Thu Aug 05, 2021 8:32 pm ] |
Post subject: | Re: A question for 1300 & 1500cc owners -Does your car have deflector boards fitted |
Many thanks to all the people who took time to respond to my post and Rob has certainly given us something to think about when he states that he thinks there fitment was to deflect water away from the engine bay but due to the passage of time I assume we will never get a definitive answer. |
Author: | xvivalve [ Thu Aug 05, 2021 9:43 pm ] |
Post subject: | Re: A question for 1300 & 1500cc owners -Does your car have deflector boards fitted |
Rob, how do the part numbers compare across the models? |
Author: | naskeet [ Wed Oct 06, 2021 8:02 pm ] |
Post subject: | Re: A question for 1300 & 1500cc owners -Does your car have deflector boards fitted |
Quote: Original Toledo radiators are shorter than 1300/1500 dolomites.
Quote: That's interesting! I shall have to compare my original 1974 Triumph Toledo 1300 radiator with the late-model, Triumph Dolomite 1500 HL radiator that I salvaged.
I finally got around to measuring the important dimensions of my original 1974 Triumph Toledo 1300 radiator and of the late-model, Triumph Dolomite 1500 HL radiator that I salvaged, which I have posted in another topic thread as follows: Board index » The Triumph Dolomite Club » Dolomite-related [Start here!] » Substituting a Triumph Dolomite 1500 HL Engine Cooling-System Radiator into a Triumph Toledo 1300 https://forum.triumphdolomite.co.uk/vie ... 92#p338724 The Dolomite 1500HL radiator is 75 mm (i.e. circa 3 inches) longer than the Toledo 1300 radiator and both are of identical width. What I don’t have for the purpose of comparison, are the corresponding dimensions of the 1976~80 Triumph Dolomite 1300! Would anyone care to oblige? |
Author: | Carledo [ Wed Oct 06, 2021 8:41 pm ] |
Post subject: | Re: A question for 1300 & 1500cc owners -Does your car have deflector boards fitted |
Quote: Quote: Original Toledo radiators are shorter than 1300/1500 dolomites.
Quote: That's interesting! I shall have to compare my original 1974 Triumph Toledo 1300 radiator with the late-model, Triumph Dolomite 1500 HL radiator that I salvaged.
I finally got around to measuring the important dimensions of my original 1974 Triumph Toledo 1300 radiator and of the late-model, Triumph Dolomite 1500 HL radiator that I salvaged, which I have posted in another topic thread as follows: Board index » The Triumph Dolomite Club » Dolomite-related [Start here!] » Substituting a Triumph Dolomite 1500 HL Engine Cooling-System Radiator into a Triumph Toledo 1300 https://forum.triumphdolomite.co.uk/vie ... 92#p338724 The Dolomite 1500HL radiator is 75 mm (i.e. circa 3 inches) longer than the Toledo 1300 radiator and both are of identical width. What I don’t have for the purpose of comparison, are the corresponding dimensions of the 1976~80 Triumph Dolomite 1300! Would anyone care to oblige? Steve |
Author: | Carledo [ Wed Oct 06, 2021 8:57 pm ] |
Post subject: | Re: A question for 1300 & 1500cc owners -Does your car have deflector boards fitted |
I wouldn't be retrofitting or refitting the deflector to the driver's side space on either a single or dual headlight OHV car, as i'd consider it more important to get a plentiful supply of cold air into and around the carburettors to help with the fuel vaporisation problems mentioned above. The deflector boards are nowhere to be found in my Toledo parts list (published Jan 74 but stamped elsewhere on the cover 26/02/1975) for either 1300cc OR 1500cc (export) models. They ARE mentioned in my 1976> Dolomite parts list as being fitted to all 1300 and 1500LL models but specifically NOT to 1500HLs. Part numbers are the same for both 1300 (SC) cars and 1500 (TC) cars Steve |
Author: | TrustNo1 [ Wed Oct 06, 2021 9:03 pm ] |
Post subject: | Re: A question for 1300 & 1500cc owners -Does your car have deflector boards fitted |
The dolly 1300 didn't have them, the 1500HL did There should be a carb heat shield fitted on the 1300 and 1500s |
Author: | Carledo [ Wed Oct 06, 2021 9:15 pm ] |
Post subject: | Re: A question for 1300 & 1500cc owners -Does your car have deflector boards fitted |
Quote:
The dolly 1300 didn't have them, the 1500HL did
That's not what the book says!There should be a carb heat shield fitted on the 1300 and 1500s Heat sheild between carbs and exhaust manifold is certainly a must-have, as is the ducting twixt airbox and grille (which you mentioned in the post you've now withdrawn) fersure also. I don't think the 1300SC versions had this ducting, but it wouldn't be difficult to make something to serve. Steve |
Author: | TrustNo1 [ Sun Oct 10, 2021 4:45 am ] |
Post subject: | Re: A question for 1300 & 1500cc owners -Does your car have deflector boards fitted |
Quote: Quote:
The dolly 1300 didn't have them, the 1500HL did
That's not what the book says!There should be a carb heat shield fitted on the 1300 and 1500s Heat sheild between carbs and exhaust manifold is certainly a must-have, as is the ducting twixt airbox and grille (which you mentioned in the post you've now withdrawn) fersure also. I don't think the 1300SC versions had this ducting, but it wouldn't be difficult to make something to serve. Steve If you read my post (which i reworded, not remove) I do say the 1500 had them but the 1300 didn't All 1300 dolomites are single carb btw. |
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