Mythbuster: continuing project thread of my 1303 '75

[Wally]

Not sure if he is, but that's Dean's car with a 2366cc type 4. Very fast as well.
Here is a pic of it, which you'll probably wanted to see as its sideways and you cab see the wheel well here:

[Phat73VW]

That's the one Wally thanks. That car was looking good on the track! As was yours You guy's have some sweet cars!!

[kuleinc]

I'm going the black rims route with my blue car... If it ever gets painted, and the rims ever find their way under the fenders...

[NO_H2O]

Great pix Wally. Looks like a great track day was had by all.

[Wally]

Today I redid my intake tubing of the turbo inlet.
The turbo inlet itself is a 56mm outside diameter, but I only had 50mm silicon 90 degree tubing at the time I made the 2 ltr turbo engine and did forced that one on there...
I now finally found the time to get a 60mm bend 90 degrees and that fitted much more easy 57mm bends can be ordered, but 60mm was on stock and now the more readily available 60mm tubing fitted better.
So I got some drain-pipe 60mm tubing and 45 degree bends and started fabbing up the new intake:


I think the cheap plastic even isolates the high radiant heat from the engine better than stainless or alu intake piping. Its also lighter than the previous 2" stainless pipe and the 20% larger intake diameter has a wopping 44% more intake area!
I dunno if this will make a huge difference (probably not at 14.5 psi), but I do know its better to have the intake tubing at least not smaller than the turbo inlet diameter.

[kuleinc]

What a HUGE difference...

[evilC]

Hi Wally,
If its standard pvc drainpipe then be aware it will start to soften at relatively low temperatures, generally around 60degC + at which point they will lose their structural integrity. I would guess the engine bay could easily get to those temps on a hot day, standing at idle after a hot run. It is quite common for turbos in the heat of battle to glow red hot so there is bound to be excess heat floating around. I would think that a stainless tube was the best material as stainless does not transfer heat comparitively that well. The luxury material would of course be CF!

Clive

[Wally]

Good info and post evilClive!

I agree on the stainless (what I had), but i cannot find 60mm stainless tubing over here unfortunately and really wanted to open up the intake NOW!
Maybe some heat-wrap will keep things at a safe level a bit longer.
Alu is too well conducting imo and I cannot weld it together..hence the hard plastic. Most OEM manufactors also use some sort of plstic for intakes and what more under the hood afaik.

Tnx,
Walter