M20 Dreaming

Thanks Udo, I have a question for all you guys, I have got part of the car wrong and it annoys the hell out of me. My mates don't notice it and when i point it out they tell me I'm being pedantic. So my question is can you guys see it. If you have noticed then I'm picking you're being polite or you also think its nothing and doesn't warrent concern. But I would like to know if anybody has seen it. I know that sounds vague but I'm not going to point it out because if its not obvious to you guys then its nothing to worry about. Cheers Leon
In truth, its hard to 'play' that game without some guidelines, Are we talking body, paint, mechanicals?
The thing I notice (and who knows if rightfully so, you have not got to it yet) the rear wing needs to be blue.
Since being no M20 expert, I may never notice.

In truth, the project is so impressive it's hard to find any 'fault'
Hi Mesa, you are right about the rear wing on both counts it should be blue and it will be I just haven't got to it yet. It is the body and thinking about it today with the fact that I have had to change the shape of the rear deck to sort the heat issue kind of makes the other issue meaningless. It just bugs me every time I look at it now but then I see it every day. I'm still curious to see if others can pick it, after all thats how you improve things from other peoples observations.

Cheers Leon

Howard Jones

GEBX cooler NACA duct on top of the rear deck?

As far as improving the car. One of the most difficult things I have found to address on my SLC is the "heat soak" problem. Airflow thru the car is really the key, not only insulation. I have found that even the most efficient insulation will transfer heat given enough time. To combat that, airflow across the heat source will in effect "pre-cool" the transfer process and lengthen the time it takes to soak the stuff you want to keep cool. Directed ducting will work as well as venting covered and enclosed spaces.

In some ways, race cars can be easier to address because you don't have to sit still in traffic or drive at very low speeds. Two things that have become a religion for me are first USE the cool-down lap at the end of a session to only cool the car. Stay off the brakes as much as possible, roll the straights as fast as allowed in neutral with the engine at near idle and add as little heat to the package as possible until you get the car back to the pit space. It helps to pick a paddock spot near the track exit.

Then open up the back of the car right away as soon as you get out of the car and let it cool between sessions. This may be the most important thing you can do that's not a modification to the car.

Ceramic coating inside and out on the headers really works. I am trying to address this issue on my car right now and I will let you know if the stuff I am going to use as a sleeve for cables work well when I know.

Fantastic car! And no you don't need the NACA duct.
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Thanks for tips Howard, I have had to remodel the rear deck between the wheel bulges in doing that I have added air intakes either side mid way down the Injection opening this will scoop air and direct it over the exhaust where they come together at the collector I will then add a heat shield covered with the heat reflective foil and I think that should be the body protected. Then I'll replace the cooked plug leads with the ceramic booted leads with the MSD heat shielding. I have been told about ceramic coating the exhaust ( I have done it before) but I like the almost Titanium look the stainless pipes have become so don't want to cover it up. I will put some photos of the remodeled deck up soon, I think once its yellow again most people won't even notice it.

And Howard it's not the NACA duct but you have a keen eye to notice it was gone, I had to remove it again because of the exhaust system.
Hello guys I have done the rear deck mods. just some finishing work and color back on it and it will be done the ceramic plug leads are on their way so hope to fire it up again soon. I'm hoping to get it to the MG classic in November but I won't be able to drive it as I have had a bit of a health scare and will get a mate of mine to run around in it for some more test miles. I will put up some more photos when its running again. Cheers Leon
Finally got the repair on the rear clip finished after the small fire from the test day. Lined the under side with fire resistant heat proofing and wrapped the rear wing. The wrap has not gone as well as hoped and will probably come off and get painted at a later date, I have a magazine coming to do an article next moth so it will do for the photos. The plug leads are here now so will fit them during the week and give it another fire up. The MG classic has been cancelled so not sure when it will get another run in the near future. Cheers Leon


You probably mention it in this thread but, what intake manifold did you use, or did you cast it yourself? Also, why are the intake tubes clearanced on the inner side?

Don't you have car track days in NZ? Nothing like trundling around in the slow group with the likes of Honda Civic Rs ;)
Hi Mesa,
The manifold is Hilborn the black extensions are purely for visual effect. The clearance is just the way they came and I haven't changed them yet.