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Discussion Starter · #301 ·
Love your thinking and upgrades Jack !
Wonder what happens to turbo and engine temp with less airflow, interesting and surely following your progress 😊
Thanks Bart! That question has popped up a few times but i think its not as complicated as people think. Its a water cooled engine so it shouldn't matter to much, the 2nd set of vents mid way up the bonnet are designed to drag hot air out the bay so there will be some movement, granted not a lot. As for the turbo again it is also water cooled, think about putting a turbo blanket on a turbo, you then also block off any air circulation, but the turbos don't seem to mind.
 

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Thanks Bart! That question has popped up a few times but i think its not as complicated as people think. Its a water cooled engine so it shouldn't matter to much, the 2nd set of vents mid way up the bonnet are designed to drag hot air out the bay so there will be some movement, granted not a lot. As for the turbo again it is also water cooled, think about putting a turbo blanket on a turbo, you then also block off any air circulation, but the turbos don't seem to mind.
That sounds reasonable, as long as you coolant water is cooler than before you'll be right.
Thought about this and does make sense. Still interesting to see the results.
Hopefully you'll be able to test it out soon !
Keep up the good work Jack, I love your build and progress 👌
 

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Discussion Starter · #303 ·
That sounds reasonable, as long as you coolant water is cooler than before you'll be right.
Thought about this and does make sense. Still interesting to see the results.
Hopefully you'll be able to test it out soon !
Keep up the good work Jack, I love your build and progress 👌
yup exactly bart , as long as the coolant is kept under control it shouldnt be a issue ! thats the plan anyway haha!
 

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Discussion Starter · #304 ·
So! New post, New flickr account! Had reached 1000 photos on the other account even after removing my holiday snaps from 2007! haha!

So first off is the bonnet, Vents have been fitted. Final placement and fingers crossed they work!



Next back was the exhaust from zircotec, as always lovely finish that wont last long this white but it will do the job non the less!





So now that the bonnet vents locations were decided i could get on with making the 2nd part of the duct from the rad up.
I originally wanted to make this in alloy first. But my lack of sheet metal skills was shown and i just couldn't get the shape right. Watching to much Gas Monkey/Jessie James shows wasn't paying off here! haha

So the only other way i knew how to do it was to get the carbon/fibreglass looked out again!

Q the mess!

Cavity boxed up with cardboard and tapped off and expanding foam filled!


This was then removed to leave me with a foam plug that was body filled and sanded (like 100 times!)

Which was then sent to the local painters to get 2k paint on it to seal it from the gel coat chemicals! This was then moulded.



Moulds made and pulled! A few touch ups needed but as this wasnt going to be a visual part i wasnt being to fussy with it.



This was then wet laid with carbon and then placed under vacuum to get all the extra resin out that would just be dead weight.

Which then left me with this!



One very light but strong 3 layer carbon duct. After lots of trimming and fitting (to both part and underside of bonnet)

I was left with this!



Its by no means visually perfect but it will do the job of diverting the air up and out. Need to fine tune the fasteners (will use riv nuts) and get the edge all sealed with rubber seals so its completely air tight. But for the first go im happy!

Next up was a bit of bad news... The pair of team dynamics i had on order for 14 months finally got cancelled, Rimstock have been in a bad place i think since covid hit and with the foundry shut in the uk out sourcing casts were providing quality issues....

Did a bit of looking about and speedline, braid and compomotive were the only wheels sorta out there that had the fords 4x108 fitment on there lists. Speedline wanted 12 wheels (when i only needed 2) so i tried compomotive and they had some in stock in the correct size!

So paid at 11am Friday and 3pm Saturday i had a set of wheels at my door! Ordered a set as i think the two 1.2's and two comps would of annoyed me!






Lovely! Grey is the stock colour, white or black is screaming my name ! haha

Cheers!
 

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Discussion Starter · #307 ·
So with the relocation of the oil rad, air flow through the rad was paramount. Would be pretty silly to get fixated on the water temps under control and in turn the oil temps rocket....

So more ducting was required. The exit of the air out of the rad isnt ideal, air into a high pressure zone isnt what you want but thats exactly what a wheel well is. Its looking like due to having the rear of the wings vented i might be ok but i guess time will tell!

Air always pics the easiest route and i knew the rads efficiancy would drop not having air directed through it.



So out with expanding foam and make a mould.



After filler, painting and mould making a quick carbon duct was made - Nothing pretty... pure function over form!



Rubber seal was added and once the bumper is fitted it fits up really nice!

Another little job was getting air out of the cabin, Naca duct fitted backwards takes car of dragging cabin air out of the inside.



Next up was some heat management 101 - Honestly think this is one of the biggest things on a track/race car. Heat kills things!

With the whole front end changed to hopefully allow better cooling, the focus's stumpy noise again hinders me! The lack of room between the carbon duct i made for the rad and the manifold was a concern. Was going to just cover it in the good old gold tape but figured i might as well try something a bit more substantial - Q Zircotec 's ZircoFlex II, 0.5mm thick but reduces temps from 500oC down below 150oC!!!



Once i was happy the carbon wasnt going to melt i got the car out for an aligment, kept it fairly tame toe wise, this is also the first time iv seen the results from the powerflex bushes fitted, just over 3.5 degrees camber and just over 4 degrees caster will hopefully help big time on the track!




Which leads me to getting a dry day to get the car out and get some logs done. Didnt get the string on the bonnet to see how airflow was doing but did get a few pulls in just to see what the temps are doing and its looking promising!
Although it wasn't anything crazy speed, there was enough to watch the temps rise, how they recover and just to see what they were doing.
Although its not in race conditions, its promising to see the water temp peak and "recover" (as it was never high) with no issue.
Oil temp peaked at 82oC before dropping off which is about what id expect to see on the road with the vent "open". Il probably never get it up much hotter than that on the road unless im being a naughty boy haha!
Air temp Peaked at 29oC and then also recovered quickly.
On the road figures don't tent to transfer onto the race figures but at least i know the car is able to heat exchange, at a fast road pace. So far the vents and duct set up doesn't seem to be a "wall" which is positive!




So it would be rude not to get some photos of the car when i was out!





And seeing as it was a nice day while out logging i took time to test out the flat shift on the car - Headphone users volume down ;)

 
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