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Bob H did this to balance the temperature in each head. I think he did a write up on the forum under "cooling mods"
John
[align=left]New additional water housing to RH head to improve cooling flow.[/align]
[align=left]is how its descrbed on ebay[/align]
[align=left]can an engine be too cool?[/align]
This mod has been carried out by many owners. Having used an IR thermometer to measure the temperature at both ends of both heads, I am not convinced it is necessary as the temperature did not seem to be considerably higher at the rear of the RH head.
As it is such a simple mod, and would cost next to nothingin production, why didn't Triumph do this from the start? They spent so much on warranty claims that this would surely have been cost-effective if it worked :?.
Dave
Dave
1974 Mk2, ZF Auto, 3.45 Diff, Datsun Driveshafts. Stag owner/maintainer since 1989.
Bob H did this to balance the temperature in each head. I think he did a write up on the forum under "cooling mods"
John
Yes Steve I have done a mod similar to this, the temp difference between the rear of the heads is approx 5% as is the difference between where the temp sender switch is and the thermostat. The temp is now balanced at both heads and hopefully prevent localised hotspots. The temp sender is near the stat on most cars so you actually get a false reading. I did put it on the 'cooling mods' listing but after spending an hour writing it down I pressed the wrong key and deleted it all, I will try and do it again, it's an easy mod and won't do any harm
As it is such a simple mod, and would cost next to nothingin production, why didn't Triumph do this from the start? They spent so much on warranty claims that this would surely have been cost-effective if it worked :?.
Dave
I remember a Top Gear programme where they used a professional car thief in a largeoffice car park and he said he could get into most of the cars in 5 secs which he proved. They then chose an expensive top of the range car and challenged him on that one, he said it would take a little longer, it took 12 secs. When Top Gear asked Wilmot Breeden who make most of the locks if they could make stronger locks they replied that they could but it would cost about £4 per car more, Ford then replied that for every million cars they sold they would loose £4,000,000.
As it is such a simple mod, and would cost next to nothingin production, why didn't Triumph do this from the start? They spent so much on warranty claims that this would surely have been cost-effective if it worked :?.
Dave
I remember a Top Gear programme where they used a professional car thief in a largeoffice car park and he said he could get into most of the cars in 5 secs which he proved. They then chose an expensive top of the range car and challenged him on that one, he said it would take a little longer, it took 12 secs. When Top Gear asked Wilmot Breeden who make most of the locks if they could make stronger locks they replied that they could but it would cost about £4 per car more, Ford then replied that for every million cars they sold they would loose £4,000,000.
Not if they added £4 to the sale price of each car:shock:
Not if they added £4 to the sale price of each car:shock:
True, but the costings on cars is very tight, especially Fords of that era. "Do the competitors use these locks, if not, we won't" Prices were cut to the bone. I remember going out to my red Cortina, which was in a pub car park, opened the boot, not my stuff inside...oops wrong one. Apparently Ford had 15 different key variations, coupled with a bit of wear on locks and keys, you had a pretty good chance of a fit.
The major improvements in car security have been driven by legislation and electronics, not the bit of metal we no longer put in the door.
My first car was a mini - 1978 I think. Anything that would fit in the door barrel would open the car, screwdriver etc! My dad found a spare barrel in the garage and my existing key fitted so I ended up using that one!
This mod has been carried out by many owners. Having used an IR thermometer to measure the temperature at both ends of both heads, I am not convinced it is necessary as the temperature did not seem to be considerably higher at the rear of the RH head.
As it is such a simple mod, and would cost next to nothingin production, why didn't Triumph do this from the start? They spent so much on warranty claims that this would surely have been cost-effective if it worked :?.
Dave
On a similar note, I wondered why the water ports on the inlet manifold didn't align with the heads posing a restriction. On my current "reserve" engine I ground out the inlet to match. No difference. However I then read Stag archives which noted the restrictions were intended as they evened out the water flow from each head into the inlet manifoldand out to the radiator (or was it penned after the designer realised his mistake?!)
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