my n/a supercharging project complete
#327
Rotary Enthusiast
Originally posted by Bauer778
I have a question about the idler pully, is the purpose of this just to adjust to tension of the belt or does it have another function?
Thanks
Dan
I have a question about the idler pully, is the purpose of this just to adjust to tension of the belt or does it have another function?
Thanks
Dan
For example, the Eaton M90 blower that zBrown installed requires ~50 HP to turn the unit to 14,000 RPM @ 10 PSI. (40 HP @ 5 PSI) Without proper tension, you'd melt the drive belt.
This is why I can't believe that zBrown's v-belt isn't slipping at higher RPMs.
Last edited by wozzoom; 04-09-04 at 11:10 AM.
#330
Rotary Enthusiast
This is going to be the trick... I don't think we need to convert the entire engine to one serpentine belt but it would make things easier. Atkins Rotary has a kit that supposedly converts a 13B to serpentine belts, but there are no pictures of it on there website. 3rd gens also has a serpentine belt.
From the pictures that zBrown posted, it looks like he used the stock Power Steering pulley to drive his SC. (He has no power steering now) It should be possible to remove the stock power steering pulley and replace it with a 6-8 ribbed serpentine belt pulley.
From the pictures that zBrown posted, it looks like he used the stock Power Steering pulley to drive his SC. (He has no power steering now) It should be possible to remove the stock power steering pulley and replace it with a 6-8 ribbed serpentine belt pulley.
#331
Rotary Enthusiast
Originally posted by Chimeron
CAS = crank angle sensor. And as far as the 14k rpms, he said it's only seeing up to about 11k, but still close so you have a point.
CAS = crank angle sensor. And as far as the 14k rpms, he said it's only seeing up to about 11k, but still close so you have a point.
We're still looking at 25 HP to drive the M90 to 11,000 RPM.
#332
Senior Member
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If it takes 25 hp tp drive the Sc how much power are you actually getting out of it? For example when they say that the get 40 hp out of it , is that 40 hp on top of the 25hp, or is that 40hp and the minus the 25 hp to get the thing to run, so your net gain would only be 15 hp?
#333
Rotary Enthusiast
Originally posted by Bauer778
If it takes 25 hp tp drive the Sc how much power are you actually getting out of it? For example when they say that the get 40 hp out of it , is that 40 hp on top of the 25hp, or is that 40hp and the minus the 25 hp to get the thing to run, so your net gain would only be 15 hp?
If it takes 25 hp tp drive the Sc how much power are you actually getting out of it? For example when they say that the get 40 hp out of it , is that 40 hp on top of the 25hp, or is that 40hp and the minus the 25 hp to get the thing to run, so your net gain would only be 15 hp?
#334
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25hp lose compared to the gains is still worth it.
Would it be possible to hook the m90 to a TII?
It has to be feasible. A sc'd turbo
One drives the pulleys, one uses the exhaust gases.
Would it be possible to hook the m90 to a TII?
It has to be feasible. A sc'd turbo
One drives the pulleys, one uses the exhaust gases.
#335
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You would be overworking them and exceeding their abilities. Instead of atmospheric pressure, you'd be feeding it 8psi and expecting it to compress that more, when it can hardly do that with 0 atmospheric pressure. I don't believe it could be done without swapping hardware.
#337
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Basically, they're saying if you had the supercharger just flowing into a tank or something, it'd suck 40hp off the engine. But since it can help power itself, it removes that and then nets a gain, how big of a gain we can't tell until the car is dyno'd. But as it stands, it's definatly under 200hp as the injectors can't support higher without detonating.
#338
Rotary Enthusiast
Originally posted by SonicRaT
Basically, they're saying if you had the supercharger just flowing into a tank or something, it'd suck 40hp off the engine. But since it can help power itself, it removes that and then nets a gain, how big of a gain we can't tell until the car is dyno'd. But as it stands, it's definatly under 200hp as the injectors can't support higher without detonating.
Basically, they're saying if you had the supercharger just flowing into a tank or something, it'd suck 40hp off the engine. But since it can help power itself, it removes that and then nets a gain, how big of a gain we can't tell until the car is dyno'd. But as it stands, it's definatly under 200hp as the injectors can't support higher without detonating.
This is why the propper ammount of fuel is so important. Assuming you're adding ~60-70 HP to the total output of the engine. (40 of that is being used to power the SC, 30 is going to the wheels) The stock NA fuel system CAN NOT handle 70 more HP!
Last edited by wozzoom; 04-10-04 at 09:23 AM.
#339
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HOLY SHEEEET!!!!and I thought all the rotary gods had blown an apex seal...
Zbrown is my new Master Enthusiast!
P.S. I dont know if you answered this... but do you have an intercooler hooked up or thinking of buying one? Also I would not attempt this just cuz I would want to get a rebuild turbo 2 tranny, and a better clutch just in case my old stuff blows up so my price would be around umm 1300 bucks or something still good as hell...
Zbrown is my new Master Enthusiast!
P.S. I dont know if you answered this... but do you have an intercooler hooked up or thinking of buying one? Also I would not attempt this just cuz I would want to get a rebuild turbo 2 tranny, and a better clutch just in case my old stuff blows up so my price would be around umm 1300 bucks or something still good as hell...
Last edited by Peruvianrx7; 04-10-04 at 10:20 AM.
#343
Rotary Enthusiast
New question: Vacuum Source
The Fuel Pressure Regulator requires vacuum to operate. Since the intake manifold is now pressurized under boost, the FPR will no longer function. Correct? Should the vac source for the FPR be re-routed? Where to? Before the SC?
Next Question: Relief Valve
Would the stock TII relief (blowoff) valve be enough for this setup?
The Fuel Pressure Regulator requires vacuum to operate. Since the intake manifold is now pressurized under boost, the FPR will no longer function. Correct? Should the vac source for the FPR be re-routed? Where to? Before the SC?
Next Question: Relief Valve
Would the stock TII relief (blowoff) valve be enough for this setup?
Last edited by wozzoom; 04-13-04 at 08:42 AM.
#344
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Im know Im late, but DAMN!!!!! That is one of the greatest mods I've ever seen for our cars, Im going to nominate you for the Nobel prize. Your excellency, could we please get a write up, please!
#345
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Originally posted by are_one
Im know Im late, but DAMN!!!!! That is one of the greatest mods I've ever seen for our cars, Im going to nominate you for the Nobel prize. Your excellency, could we please get a write up, please!
Im know Im late, but DAMN!!!!! That is one of the greatest mods I've ever seen for our cars, Im going to nominate you for the Nobel prize. Your excellency, could we please get a write up, please!
#346
Rotary Enthusiast
Originally posted by SonicRaT
What more do you need that's not already here?
What more do you need that's not already here?
If you don't feel like doing the engineering to make this project work yourself, then you'll have to wait till someone finishes their install and posts their work.
Can we please quit it with the posts requesting a "write-up"?
#347
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I'm gonna put a s/c on my 88 vert *** soon as I get the s/c. I can make any brackets for anything, have a bunch of 1/4" steel and cutting and welding torch. The only this is, will my afm still actually work proparly?
#348
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The only thing missing is how to make the bracket itself, which is 'CUSTOM', I'm not a fan of the way it was setup though. I'd of attempted to use the airpump's mounting points, as well as the intake bolts to fab something up, a little easier and more workable in my opinion.
#350
Rotary Enthusiast
Originally posted by SonicRaT
The only thing missing is how to make the bracket itself, which is 'CUSTOM', I'm not a fan of the way it was setup though. I'd of attempted to use the airpump's mounting points, as well as the intake bolts to fab something up, a little easier and more workable in my opinion.
The only thing missing is how to make the bracket itself, which is 'CUSTOM', I'm not a fan of the way it was setup though. I'd of attempted to use the airpump's mounting points, as well as the intake bolts to fab something up, a little easier and more workable in my opinion.
the air-pump mount is a little to far forward to use as a primary support, plus the aluminum waterpump casting there is prone to breaking.
that leaves the intake itself and the engine mount.