Under Bonnet Temps, problem solved

Under Bonnet Temps, problem solved

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Discussion

Rscocca

Original Poster:

127 posts

125 months

Tuesday 8th September 2015
quotequote all
Hello everyone, as we all know the under bonnet temps on these beautiful machines can be quite temperamental in stop and go traffic.
I think I may have found a solution, It works for me and I'm driving in 90 degree (f) temps all day long with out issue.
I installed two Spal 4 inch fans ( 30103009) in the rear grill area between exhaust tips. They are controlled by a Flexlite Variable speed controller (31165), the controller uses a temp probe that would normally go thru the fins on a radiator. I mounted the probe to the frame of the car above the transaxle.

Before all this, when I sat in traffic after getting off a highway, my temp gauage would climb to as high as 235 F.
Since installing fans, I engine temp gauge climbs no higher then 195 F.

It seems all the over heat issues some have been having is the fact that the engine is becoming heat soaked after long drives.

I saw the above solution on a Ferrari, I seem to be on the right track, so I figured I would share my success with everyone.

Cheers,
Bob Scocca

Rscocca

Original Poster:

127 posts

125 months

Wednesday 9th September 2015
quotequote all
Here are two photos of rear fans (3) installed between rear exhaust tips.




each fan pushes 147 cfm and draws less then 2.2 amps. I have all three running thru same controller that would be used for a radiator. sensor probe mounted directly to frame .

Rscocca

Original Poster:

127 posts

125 months

Wednesday 9th September 2015
quotequote all
fans are mounted directly onto the rear mesh with black button head screws and nylock nuts. sounds like a mini twister going on back their but it does remove the hot air rather quick.

Rscocca

Original Poster:

127 posts

125 months

Thursday 10th September 2015
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Space issue, under fans are rain light and back up camera.

Rscocca

Original Poster:

127 posts

125 months

Friday 11th September 2015
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Nabbott--From the rear of the car, unless you look close you do not see the fans. Mounted with black button head screws.
I'll post a photo in the morning.

Georg-- I'm glad your solution worked.Many different solutions to same issue, options are always a good thing.smile

Rscocca

Original Poster:

127 posts

125 months

Friday 11th September 2015
quotequote all
As promised, photos of rear of car with all fans installed.



Rscocca

Original Poster:

127 posts

125 months

Sunday 13th September 2015
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No Fans on the oil cooler yet, Wrapping silencers was just a preventative thing, I'm sure it helped a little.

Rscocca

Original Poster:

127 posts

125 months

Monday 14th September 2015
quotequote all
FC-- Complete exhaust Ceramic coated with Swain Tech White lightning, yes it helps.

The fans push air out from under the bonnet when temps reach about 200F and go off at 180F. Ussually I only see thes numbers after coming of the Expressway and come to a stop at a light.

Rscocca

Original Poster:

127 posts

125 months

Monday 14th September 2015
quotequote all
Swain tech info, located here in the States

http://swaintech.com/race-coatings/race-coating-de...