[Healeys] BJ8 Temps
bspidell at comcast.net
Mon Sep 4 11:03:50 MDT 2017
re: "...On a similar thread has anyone used the cold vent air to bring
cooler air to the carb intake area when cruising ? Results ?"
There's a long thread on ahexp.com on this topic. It's for 100s, but
should be applicable to 6-cyl cars as well. Here's one fellow's solution:
On 9/4/2017 7:13 AM, Roger Grace wrote:
> My BJ8 seems to perform better with the increased O2 of lower
> ambient temps in the evenings and mornings. There even seem to be fewer
> rattles squeaks and groans too !
> I have an oil cooler, electric rad. fan oil temp gauge and standard rad.
> Whenever I spend more than say 20 mins in traffic after the engine oil is
> already up to temp, the idling is impacted due to what must be due to
> increased engine compartment air temp, and the HD8 mixture becoming
> too rich for that
> So I decided to do some crude testing, and installed a temp. pick up near
> the rear carb intake.
> In an ambient of around 85F and sustained cruising at around 60 MPH –
> rad fan off
> Water is 190F
> Oil is 165- 170F
> Engine compartment is around 130F
> At same ambient and elec. fan now on and after 25 mins idling in traffic
> Water is 200F
> Oil is 180 F
> Engine compartment is over 155F and idling has to be nursed to avoid
> stalling. This must be a build up of exhaust heat with no exit path.
> Have tried to compromise with mixture settings but not yet found a sweet
> So l was wondering if anyone has tried to improve engine compartment
> and how ?
> Assume this why some cars have louvers on hood or side of car.
> Ideas comments welcome.
> On a similar thread has anyone used the cold vent air to bring cooler
> air to
> the carb intake area when cruising ? Results ?
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