Axial Flow Supercharger
#3351
Registered
I know everyone is getting excited so let me pose a slightly different scenario just in case. Since this is the first time it's been in a car and tuned, there are 2 possibilities. The first is that it wrks like it should, makes great power and everyone is happy. The second scenario is that we find out that the blower itself is sized wrong for the job at hand which means that it might not make that power that was hoped for. I don't want this to be the case but we need to understand that it is still a possiblity. The possibility exists that Richard would have to go back and redesign the blower for more flow capability. We'll know for sure pretty soon but I still thought that everyone should at least be prepared for any scenario. Everyone is assuming all will go perfect and this leaves room for disappointment if it doesn't go as planned. Hopefuly we'll have some good news soon but if we don't, it isn't the end of the world. It's just back to the drawing board. You have to learn before you can get it right. come on Richard, give us the good news and not the bad!
#3352
A flow change should not be that hard since it is all done on a C&C
At least everything else is already intergraded into the car.
If it does come to a blower change it hopefully would be an easy removal & replace job.
At least everything else is already intergraded into the car.
If it does come to a blower change it hopefully would be an easy removal & replace job.
#3355
Cool guys... I can't wait to see some results...
Hopefully it's not like Rotary God said. It won't make much difference to me, since I don't even have an 8, but I can still be excited. ;-)
Hopefully it's not like Rotary God said. It won't make much difference to me, since I don't even have an 8, but I can still be excited. ;-)
#3356
The AFS is why one reason why I went with nitrous and not the turbo route. If RP gets it all sorted out I may go with the SC and add a little nitrous for the cherry on top. Later this summer I'll crank the shot up to see what the stock engine can handle and if it goes well I'll use boost for track racing and add the nitrous for the drags. My immediate next step is to use my E-Man to control ignition and accomodate the shot.
CRH
CRH
#3359
Well we just got back from Rancho Cucamonga. Wherever that is.
I did some work on the street yesterday with the 5 psi pulley.
There was a problem with the machined legnth of the pulley so it rode off by 1 groove. Therefore there was belt slipage up to a point where the belt would go back on and use all grooves. Driving the car we had no idea what was happening because when the engine was shut off it would return to looking OK.
We couldn't figure out how come there would be no boost up until about 7000 RPM, then it would come on like you just added another enngine. Really wierd.
When I found it I had to shim the pulley out but not having a shop to work out of I just figured a washer I found is about right. It didn't fit the shaft so I had to go over to a freind machine shop who very genorously took down a set up on his CNC lathe and bored the washer to 15mm.
I put the washer in as a spacer and thought it was Ok. Then today when we got to the dyno we could see the belt now going off the other side of the pulley. The washer is to thick. So we had to fight that not knowing when we got repeatable runs because the belt would load and unload. We didn't get on the dyno until after 9:00 or 9:30.
We got some of the fueling done but Scott couldn't stay any longer and I didn't get a chance to try the next pulley size or fix the spacer.
So where are we? Without all the little things being fixed we did see some nice numbers. With 5psi it picked up just about 50HP. 49 to be exact. The best it ever did before was 170 and tonight it showed 219. There was still more to be had but Scott had had enough. The poor guy ran his *** off all day with I don't know how many cars. He was draggen it when he left at 10:30.
So it's up to me for the rest of the tuning and putting on the smaller pulleys. There is only one left to try until my shop can make some more. And a spacer of the right thicness. I havn't studied the charts yet to analize the curves and such to see how we did in the lower ranges. I'll get back to you on that. I'm to tired to even go get them from the car. I'm hungry and in need of a drink.
The poor dog just got fed. Terri went with me and left her Jeep here with the sunroof out and it rained today. You know how sheepskins stink when their wet? Well she insits her seat covers be brought in and dried in the drier. The night is not over.
Now that's better Terri, you may dry your seatcovers (as she gives me a bottle of Remy Martin)
I did some work on the street yesterday with the 5 psi pulley.
There was a problem with the machined legnth of the pulley so it rode off by 1 groove. Therefore there was belt slipage up to a point where the belt would go back on and use all grooves. Driving the car we had no idea what was happening because when the engine was shut off it would return to looking OK.
We couldn't figure out how come there would be no boost up until about 7000 RPM, then it would come on like you just added another enngine. Really wierd.
When I found it I had to shim the pulley out but not having a shop to work out of I just figured a washer I found is about right. It didn't fit the shaft so I had to go over to a freind machine shop who very genorously took down a set up on his CNC lathe and bored the washer to 15mm.
I put the washer in as a spacer and thought it was Ok. Then today when we got to the dyno we could see the belt now going off the other side of the pulley. The washer is to thick. So we had to fight that not knowing when we got repeatable runs because the belt would load and unload. We didn't get on the dyno until after 9:00 or 9:30.
We got some of the fueling done but Scott couldn't stay any longer and I didn't get a chance to try the next pulley size or fix the spacer.
So where are we? Without all the little things being fixed we did see some nice numbers. With 5psi it picked up just about 50HP. 49 to be exact. The best it ever did before was 170 and tonight it showed 219. There was still more to be had but Scott had had enough. The poor guy ran his *** off all day with I don't know how many cars. He was draggen it when he left at 10:30.
So it's up to me for the rest of the tuning and putting on the smaller pulleys. There is only one left to try until my shop can make some more. And a spacer of the right thicness. I havn't studied the charts yet to analize the curves and such to see how we did in the lower ranges. I'll get back to you on that. I'm to tired to even go get them from the car. I'm hungry and in need of a drink.
The poor dog just got fed. Terri went with me and left her Jeep here with the sunroof out and it rained today. You know how sheepskins stink when their wet? Well she insits her seat covers be brought in and dried in the drier. The night is not over.
Now that's better Terri, you may dry your seatcovers (as she gives me a bottle of Remy Martin)
Last edited by Richard Paul; 05-22-2006 at 04:00 AM.
#3361
Richard,
Thanks for the update! I am very interested in your progress and might put in to be on the list for one of the first.
Something that is important to me and many others who like trackdays is the power curve. What does it look like at this point? An Interceptor X Greddy turbo setup feels great and produces a very nice curve when tuned properly, but it falls off on the top end.
I love the top end power! That is my favourite part of this car. Winding it out to redline and then shifting. If I lost the revs I would be bummed. Do you feel your supercharger is going to make a linear increase straight to redline? If not, how could it be accomplished?
What is the torque curve like? I am hoping the power deliver is exactly like stock only on a higher curve.
Thanks for all the work!
Thanks for the update! I am very interested in your progress and might put in to be on the list for one of the first.
Something that is important to me and many others who like trackdays is the power curve. What does it look like at this point? An Interceptor X Greddy turbo setup feels great and produces a very nice curve when tuned properly, but it falls off on the top end.
I love the top end power! That is my favourite part of this car. Winding it out to redline and then shifting. If I lost the revs I would be bummed. Do you feel your supercharger is going to make a linear increase straight to redline? If not, how could it be accomplished?
What is the torque curve like? I am hoping the power deliver is exactly like stock only on a higher curve.
Thanks for all the work!
#3363
Originally Posted by Richard Paul
We couldn't figure out how come there would be no boost up until about 7000 RPM, then it would come on like you just added another enngine.
5000 - you sure this things hooked up right?
6000 - hey that '78 Fiat 128 is passing us us! (I know bad joke - a 78 Fiat 128 couldn't get up to the same speed as an RX8 at 6000 rpm in 3rd gear, much less make it up a hill )
6999 - we'll let's take it back to the shopppwhOOOAAAAAHHHHHHHHH!!!!!!!!!!
GjG!! On the road!!! 1st Dyno!! this is AWESOME!!!
#3366
Originally Posted by Photic
No kidding, that would give me a reason to use my 500$ gift certificate towards a revi.
Save it for a flywheel.
The kit will have it's own intake. The one on the car is a prototype just so we could get runing. We're thinking CF. how would you like that?
And of course there will be a strut bar in the kit too. Not CF though, 4130.
Would I let you down at this point? The hard part is over. The other things are dressing.
#3372
Originally Posted by swoope
rp,
thanks for the hard work.... tuesday you got mail....
read....
beers
thanks for the hard work.... tuesday you got mail....
read....
beers
I don't know what you're trying to bribe me for but it could work.
The down side is this stuff could be harmfull as it goes down like water.
Thanks, no matter how it hurts, Richard
#3373
Zoom-Freakin'-Zoom
iTrader: (5)
Originally Posted by Richard Paul
I don't know what you're trying to bribe me for but it could work.
The down side is this stuff could be harmfull as it goes down like water.
Thanks, no matter how it hurts, Richard
The down side is this stuff could be harmfull as it goes down like water.
Thanks, no matter how it hurts, Richard
it is all about moderation, excessive moderation.... how was my timing????
you know it is all about the timing!!! i hope it got to you on the downside of the activity....
enjoy, you have earned it...
beers
#3375
Originally Posted by Umbra
Same here.
You may keep it but you will have to cut some of it away to fit the supercharger.
The better idea if you must keep it is to hang it on the wall in your office.
Smart move would be to sell it and just use the one in the kit.
Three choices, that's nice isn't it?