[novaz]

Is it possible to use standard SU carbs whilst running a low pressure turbo or supercharger?

I would prefer blow through, as on a suck through system I imagine a backfire in the inlet would not bide well for an intercooler (bomb)

If it isn't possible (I am highly doubtful) Could the carbs be housed inside a box with the pressurised air in, to equalise the pressure?

Thanks
David

 

[ppanofsky]

"Blow through" is a bad idea. carbs are designed to run with a higher pressure on the outside, not the inside. However, I have heard of inclosing the carbs in a box. I think that it was done often in the early days of turbo retrofiting.

 

[dbryan70z]

Never got a definitive answer

I don't think anyone that cruises this forum has ever boosted an SU, I have an interest even if it is just a small boost from "cowl induction" which has been bantered about on here at length a few times. Use the search engine on cowl, and see what you find in the last 60 days.

 

[Loosetoe]

Coulda fooled me....

...but isn't this a carb'd turbo....

If you do this, it would be easiest to do a draw through system as above.

This is more info on that car

<a href="http://www.ozdat.com/ozdatonline/featurecars/JamesF/JamesF_dat.htm#Zed">

 

[Loosetoe]

sorry...here's the pic

Link
<a href ="http://www.ozdat.com/ozdatonline/featurecars/JamesF/Zed_final/zed_final.html"> OzDat</a>

 

[novaz]

Re: sorry...here's the pic

So it seems that SU's can be used when used in any draw through system.... Now comes the tricky part.
I am almost 100% sure that an intercooler cannot be used in a draw through system due to it creating a fuel saturated, pressurised tank. This is pretty much just a bomb, and I would be so very scared of intake backfires...... Unless there are "blow off valve" type things that you could plumb into the intake to save it?

Second, I have read that adding fuel before a supercharger drastically shortens the life of the bearings etc... Can anyone verify this? I prefer the idea of the supercharger due to it's increased torque down low, as one can always add a mild cam to get more up top.

Regards
David

Loosetoe wrote:
>
> <img
> src="http://www.ozdat.com/ozdatonline/featurecars/JamesF/Zed_final/240z_turbo8.jpg">
>
>
>
> Link
> <a href
> ="http://www.ozdat.com/ozdatonline/featurecars/JamesF/Zed_final/zed_final.html"> OzDat</a>

 

[DylanZ]

Just a week or two ago..

there was a link on here that shown "tripples getting pressurized" i think is how the bit was labeled, search here for that. don't remember what it came up under, but it was a link to a kit availible. Personaly, I like the blow through idea better than the suck through, for the simple reason as stated above. Check around the archives, it's been done, and I think there is a write up on that on Zhome.com under "Z for the road and track" I think that for both setups water injection was the prefered method over intercooling.

Dylan Z