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Any turbo guys out there?

  • Thread starter Thread starter H.M.S.
  • Start date Start date
I am at work and we have filters on the internet and I don`t get any pictures.:(
 
Now that I have seen the picture...WOW:D interesting concept. I see that you are running your oil supply off of your cam. This is not a good idea due to the fact that gs`s are prone to have weak oil supply to the cams. If possible run a line off of the oil manifold behind your engine. Mr turbo sells billeted manifolds that you can tap off of and not lose your pressure sender or temp sender and it bolts right on, I think I may even have an extra one laying around somewhere if your interested. I run my setup without a regulator:eek: this gives me 7 psi on both of my turbo bikes. You need to throw the stock petcock away and get a pingle petcock, they will give the turbo what it wants...FUEL. Give me a call if you have any questions. Kris
 
Kris V said:
Now that I have seen the picture...WOW:D interesting concept. I see that you are running your oil supply off of your cam. This is not a good idea due to the fact that gs`s are prone to have weak oil supply to the cams. If possible run a line off of the oil manifold behind your engine. Mr turbo sells billeted manifolds that you can tap off of and not lose your pressure sender or temp sender and it bolts right on, I think I may even have an extra one laying around somewhere if your interested. I run my setup without a regulator:eek: this gives me 7 psi on both of my turbo bikes. You need to throw the stock petcock away and get a pingle petcock, they will give the turbo what it wants...FUEL. Give me a call if you have any questions. Kris
Click to expand...

But the '83 750's have external supply lines to head, so I think he'll be okay.
 
Kris, the 83 750 & the 85 700s have external lines feeding the cams from the rear of the head. Ray.
 
Really... I did not know that. You learn something new every day.
 
Kris V said:
Take the regulator off and run it straight for now. I run 7 psi on mine. What type carb and how big???? You will need a two stage retard for the ignition and a pressure switch in the intake manifold so that you can control it. Hopefully you are running 7.8:1 comression or you will never get above 10 psi of boost without hand grenading your engine. Give me a call and I will fill you in 661-203-7177 Kris
Click to expand...

I don't know if you saw the pics but this is not exactly a high dollar build. I had the bike and the turbo laying around in the garage for years before I decided to put them together. Can't I just set the timing back a few degrees without having an electronic retard? I also took the vacuum diaphram out of the petcock, with the pump running and a hose draining back into a 2 gallon gas can it filled it up in about a minute. I originally had a pitot tube going straight through the intake with one hole in the center. I changed it to two 90 degree bends and 3/8" tube. Now it definitely is getting enough fuel, the plugs have good color now, but still breaking up a little in the transition to boost.
IMG00139.jpg
 
With the turbo, you need the full advance timing at 28 degrees or LESS. You have a fixed plate & rotor on that model 750 so you can't retard it & it will be a turd when it's not on boost if you could retard it. Ray.
 
That "BREAKING UP" is because of the timing. Dyna makes a great dual stage retard and it will get rid of the problem. You might have to run a Dyna S ignition to make it work properly. Like I said before you can run a pressure switch in the intake manifold prior to the carbs and with the dual stage retard it will sense the pressure change and retard the timing twice and it is programmable.
 
Kris V said:
That "BREAKING UP" is because of the timing. Dyna makes a great dual stage retard and it will get rid of the problem. You might have to run a Dyna S ignition to make it work properly. Like I said before you can run a pressure switch in the intake manifold prior to the carbs and with the dual stage retard it will sense the pressure change and retard the timing twice and it is programmable.
Click to expand...

Ok, thanks. I'll look into it. When in your opinion does the boost start to affect the timing? Is it as low as 1 or 2 psi? Because my boost gauge is only showing that amount at wide open throttle before it starts sputtering.
 
Yes...I have mine retard at 4-5psi. You need a pingel fuel valve! I have modified many different stock fuel valves and it doesn`t compare to a pingel.
 
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