Where can I get a guage to do this?

I'd imigan most boost guages wont like the heat!!


Alex

 

Sorry for the poor photo, but these are the ones Harvey uses, not sure of make and I can't phone Harvey, as he is sitting on a beach at the moment .



Ask me next week, as I am there on Tuesday watching a customer's engine being dynoed....

 

Thought that might be the way pro's did it

I'm trying to find a DIY method from cam research on my shonky mini!

A std boost guage should have a good enough range and I can accpet the accuracy of even a TIM guage! But I have a feeling one would melt if just connected up to the manifold... unless a coil of tube cooled by water between the maniflod and the guage would work

Alex

 

Alex, in teh past ive used coiled copper microbore running under the car for cooling effect. This is leading from a manifold connection of steel.. its a bit precarious but does work well for short periods.

 

if you run a long capillary tube to the gauge, i can't see the gas being that hot anyway

another way might be to have a capillary leading to a liquid and then another capillary from the liquid to the gauge. it would take a while to heat that liquid, but the pressure would be transmitted through it.

what do you want to measure? pressure difference across the turbo, across the turbo and exhaust, or just of the exhaust system after the turbo?

 

Pressure difference between the inlet manifold and the exh manifold is what I want to measure.

No one has any idea what they are doing with A-Series turbo cams, other than the "well this one is used alot" and some serious guessing!

Its a funny engine and not all "usual" tuning techniques for turbos work!

alex

 

could be intresting mate,,, keep us posted

 

Alex, have you spoken to Matt? He could help with speccing your engine, as his A series produces 220bhp at the hubs...

 

sounds like its turning into a jap board,,,, aint that what they all say

 

has it been on a "hub dyno"?

 

Mike,

LOL yes... and I've seen his power delivery too...

Put it this way, I wouldn't be happy with that!!!

His is a tame spec compaired to what I would like... his is only 170bhp/litre... not much in turbo power terms.

Alex

 

LOL@Guesswork, sounds like the GTR lot and their cams, esp with their "the bigger the turbo the longer the duration should be" ideas they have...

"Yea, i got a ropey 1980s 950bhp rated T88 truck turbo, huge ports, and 280deg 11mm lift cams, on a short stroke 2.6litre engine, it runs like a bag of laggy shit with no power under 6000rpm why? Will 320deg cams help? What about if i pay even more over the odds for parts, thats gotta help?"



Tossers

 

In case you missed it....

 

FRS,
Why do you think I said at the hubs ?

Alex,
To be fair, the ignition is not mapped and it's running a carb, so is still using the antiquated set up. The driveability would improve no end with proper management / injection etc - which I guess is what you would be using? So this would negate the problems in delivery experienced by Matt .

 

Maybe able to 'borrow' you a proper transducer from work alex i'll ask when i get chance

 

Mike,

Agreed, but you wont get injection to run on a mini turbo mapped ign is no problem and yes I will be running that.

Nick,

If you could that would be sweet!

Alex

 

http://www.emeraldm3d.com/em_projects_Aseries.html

Worth a look mate.

Mark

 

Ive seen an A-Series running injection, well kinda, a single 803 green on a throttle body...

 

Which is better than than a carb how?!?!

lol


alex

 

The heat is not an issue for the gauge as there is no actual flow. For an example, the pressure trousers fighter pilots use are pressurized directly from the turbofans turbine pressure. The heat of this is comparable to the heat in turbocharger turbines. This all works without problems. Now imagine if the trousers would start to leak air out...