Pettit Super Charger Owners
10-15-2009, 02:08 PM
#6276
Administrator
iTrader: (7)
olddragger: what are your thoughts on solid mounts?
I know there's a thread around here somewhere but figured I'd ask in here.
There's a Rotary shop near me in SoCal that has Solid mounts on a couple of 2nd Gen RX-7's and they swear by them. (engine, sway bar, and transmission mounts)
I know there's a thread around here somewhere but figured I'd ask in here.
There's a Rotary shop near me in SoCal that has Solid mounts on a couple of 2nd Gen RX-7's and they swear by them. (engine, sway bar, and transmission mounts)
10-15-2009, 03:10 PM
#6278
dont like solid mounts. vibration etc will be hard to take and sooner or later you are going to get cracks or breaks in SOMETHING.
Now I have been working on a polyurethane mount (like energy suspensions stuff) for us and I have been running different versions of it for the past 3-4 months. I think i have it down now and have one beta tester to recieve his next week and Phil is trying to find some auto mounts for me to do (they are harder to find!)
Our motor mounts are too soft--even for na cars on track. I think this may contribute to some of the trans problems people have?
All I do know is on my car --now when you press the gas there is now a real "snap" to it whereas before there wasnt. Yes there was a hard pull but the suddeness of it changed. Shifting gears is more direct and solid feeling.
Just a tad of vibration at idle when the car is cold that goes right away when the rpms are raised just a little.
I think i have figued out a way to run only one poly mount on the passenger side and a slightly modified oem mount on the drivers side. there is more to mounts than meets the eye but they are sure worth it.
olddragger
Now I have been working on a polyurethane mount (like energy suspensions stuff) for us and I have been running different versions of it for the past 3-4 months. I think i have it down now and have one beta tester to recieve his next week and Phil is trying to find some auto mounts for me to do (they are harder to find!)
Our motor mounts are too soft--even for na cars on track. I think this may contribute to some of the trans problems people have?
All I do know is on my car --now when you press the gas there is now a real "snap" to it whereas before there wasnt. Yes there was a hard pull but the suddeness of it changed. Shifting gears is more direct and solid feeling.
Just a tad of vibration at idle when the car is cold that goes right away when the rpms are raised just a little.
I think i have figued out a way to run only one poly mount on the passenger side and a slightly modified oem mount on the drivers side. there is more to mounts than meets the eye but they are sure worth it.
olddragger
10-15-2009, 03:29 PM
#6279
Software Engineer
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Have you guys done a dyno with 93 octane gas? I saw the one on the site is for 98octane (I think), is there much of a difference? Obviously E85 is a huge difference though.
dont like solid mounts. vibration etc will be hard to take and sooner or later you are going to get cracks or breaks in SOMETHING.
Now I have been working on a polyurethane mount (like energy suspensions stuff) for us and I have been running different versions of it for the past 3-4 months. I think i have it down now and have one beta tester to recieve his next week and Phil is trying to find some auto mounts for me to do (they are harder to find!)
Our motor mounts are too soft--even for na cars on track. I think this may contribute to some of the trans problems people have?
All I do know is on my car --now when you press the gas there is now a real "snap" to it whereas before there wasnt. Yes there was a hard pull but the suddeness of it changed. Shifting gears is more direct and solid feeling.
Just a tad of vibration at idle when the car is cold that goes right away when the rpms are raised just a little.
I think i have figued out a way to run only one poly mount on the passenger side and a slightly modified oem mount on the drivers side. there is more to mounts than meets the eye but they are sure worth it.
olddragger
Now I have been working on a polyurethane mount (like energy suspensions stuff) for us and I have been running different versions of it for the past 3-4 months. I think i have it down now and have one beta tester to recieve his next week and Phil is trying to find some auto mounts for me to do (they are harder to find!)
Our motor mounts are too soft--even for na cars on track. I think this may contribute to some of the trans problems people have?
All I do know is on my car --now when you press the gas there is now a real "snap" to it whereas before there wasnt. Yes there was a hard pull but the suddeness of it changed. Shifting gears is more direct and solid feeling.
Just a tad of vibration at idle when the car is cold that goes right away when the rpms are raised just a little.
I think i have figued out a way to run only one poly mount on the passenger side and a slightly modified oem mount on the drivers side. there is more to mounts than meets the eye but they are sure worth it.
olddragger
10-16-2009, 07:45 AM
#6289
Which model Lysholm is/was being used in Cam's kit? I'm curious if a Whipple could be brought into the design without a tremendous amount of fuss. Same 5/3 screw rotor design as the Lysholm, I just don't know the particulars of either to make an educated guess.
Long live the S/C!
Long live the S/C!
10-17-2009, 04:02 PM
#6291
Registered
Make a single multi-pulley with all the stock pulleys built-in, then you may have room.
I have looked into the BHR notched belt pulley for the Pettit blower, but it doesn't seem to be in production yet. (The BHR pulley kit does seem to have the Pettit "big" pulley ratio)
10-17-2009, 06:12 PM
#6292
Rotary engine addict
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Hi guys!
I saw that you always talk abou ta "big" pulley.
Is pettit preparing a method to upgrade the S/C ?
what are the advantages and inconveniant of this pulley ?
thanks
I saw that you always talk abou ta "big" pulley.
Is pettit preparing a method to upgrade the S/C ?
what are the advantages and inconveniant of this pulley ?
thanks
10-17-2009, 06:25 PM
#6293
Well, therein lies the tale. Air is air, but how much, where are the critical physical dimensions vs. the Lysholm, can the layshaft in the Pettit kit be used (if it *has* a layshaft, haven't really paid that much attention) and so on. I am not an engineer, I do the odd bit of tinkering, I can follow instructions to the dotted notation (quarter-century of USAF checklist procedures'll do that to a man ), so if there is a chance in Hades it'll work, I volunteer the SYZ for testing a Whipple-based Pettit Stage II install. It'll be interesting, that's a given.
Financial setback of $1500 over the last ten days, emergency vet bills from our four-footed canine daughter of three years dying of blastomycosis
, otherwise that might have been MY order for the last of the true Pettits.
Life sucks. The trick is to stay out of the venturi.
), so if there is a chance in Hades it'll work, I volunteer the SYZ for testing a Whipple-based Pettit Stage II install. It'll be interesting, that's a given.Financial setback of $1500 over the last ten days, emergency vet bills from our four-footed canine daughter of three years dying of blastomycosis
, otherwise that might have been MY order for the last of the true Pettits.Life sucks. The trick is to stay out of the venturi.
Last edited by Striker-7; 10-17-2009 at 06:28 PM.
10-17-2009, 07:44 PM
#6294
Registered
More boost
The bad:
There's a bad to 13 PSI? LOL
Larger secondary injectors are recommended, new flash is required.
10-17-2009, 10:35 PM
#6296
no new flash required that I am aware off as long as approved ugraded injectors are used. ??.
I dont want to use a cog belt (BHR's) because of the noise it makes and the $900 price is too much for me(thats at his cost).
I think an 8 rib belt would do it--but if it can be done? Would need a new crank pulley , tensioner and sc nose pulley. Will a whipple pulley fit? Bunch of them available.
Can anyone speak with Cam? Where is Moon when you need him?
OD
I dont want to use a cog belt (BHR's) because of the noise it makes and the $900 price is too much for me(thats at his cost).
I think an 8 rib belt would do it--but if it can be done? Would need a new crank pulley , tensioner and sc nose pulley. Will a whipple pulley fit? Bunch of them available.
Can anyone speak with Cam? Where is Moon when you need him?
OD
10-17-2009, 10:39 PM
#6297
whines all the way home
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I know Moon is pretty much fed up with the forum now-a-days, hes spending alot of time planning out and working on Project Street Ray, is there anything specific you would like me to talk to him about Im calling him tomorrow and Cam Mon or Tues,,,,
10-17-2009, 10:44 PM
#6298
Registered
LOL
no new flash required that I am aware off as long as approved ugraded injectors are used. ??.
I dont want to use a cog belt (BHR's) because of the noise it makes and the $900 price is too much for me(thats at his cost).
I think an 8 rib belt would do it--but if it can be done? Would need a new crank pulley , tensioner and sc nose pulley. Will a whipple pulley fit? Bunch of them available.
Can anyone speak with Cam? Where is Moon when you need him?
OD
I dont want to use a cog belt (BHR's) because of the noise it makes and the $900 price is too much for me(thats at his cost).
I think an 8 rib belt would do it--but if it can be done? Would need a new crank pulley , tensioner and sc nose pulley. Will a whipple pulley fit? Bunch of them available.
Can anyone speak with Cam? Where is Moon when you need him?
OD
Basically, replace all the lower pulleys with one that has grooves for each belt, I think they could be closer if the edges of each pulley were machined into a single separator.
It would also be easier to install the bottom pulley, no bolt matching the multiple pulleys.
I would also like to see our blower turned 180 like the Hymee kit, but keep the water to air inter-cooler, I like the idea of a straight shot into the blower intake, the down side is the counter shaft to drive a pulley near the firewall.
Last edited by Rote8; 10-17-2009 at 11:05 PM.
10-18-2009, 04:53 AM
#6299
Maybe it's just me, I still suspect I have the "short bus" flash...
LOL
I think a single compound pulley for the crank could fit an 8 (or even 10) rib belt.
Basically, replace all the lower pulleys with one that has grooves for each belt, I think they could be closer if the edges of each pulley were machined into a single separator.
LOL
I think a single compound pulley for the crank could fit an 8 (or even 10) rib belt.
Basically, replace all the lower pulleys with one that has grooves for each belt, I think they could be closer if the edges of each pulley were machined into a single separator.
to use the air con pulley you need to find another clutched aircon pulley the right diameter for the larger belt.
10-18-2009, 07:26 AM
#6300
Registered
the water pump and alternator belt is limited to, 6 or possible 7. you run too close to the aircon belt otherwise. you would need to move the compressor back about an inch.
to use the air con pulley you need to find another clutched aircon pulley the right diameter for the larger belt.
to use the air con pulley you need to find another clutched aircon pulley the right diameter for the larger belt.
I was thinking only about how to fit a wider blower belt.