How is your new water pump going ?
That last picture is interesting. It looks like a 2 rotor peripheral port 13B (maybe? still working on that one) with a dry sump system, and slide throttles. Judging from the crank trigger, it looks like it's probably controlled by a Motec. It's also got a 1st gen motor mount setup. What class is this for? Is that intake and exhaust just a generic used on the test stand? If it's not, I can't figure out what they'd fit in.
One thing that stands out for me is the apparent lack of fuel injectors on the intake manifold. The only injectors I see (I could just be blind) are on the rotor housings on the intake side of the engine.
One thing that stands out for me is the apparent lack of fuel injectors on the intake manifold. The only injectors I see (I could just be blind) are on the rotor housings on the intake side of the engine.
.Paul.
We will be releasing and promoting our pump on our new website (To be announced soon). Pump sales without promotion have been interesting. We've sold them to people as far away as China and United Arab Emirates for forced induction vehicles.
Some users will remain un-named by their own request for various reasons. Maybe some of the others will chime in at some point.
Paul.
Some users will remain un-named by their own request for various reasons. Maybe some of the others will chime in at some point.
Paul.
Registered User
Joined: Aug 2006
Posts: 792
Likes: 2
We will be releasing and promoting our pump on our new website (To be announced soon). Pump sales without promotion have been interesting. We've sold them to people as far away as China and United Arab Emirates for forced induction vehicles.
Some users will remain un-named by their own request for various reasons. Maybe some of the others will chime in at some point.
Paul.
Some users will remain un-named by their own request for various reasons. Maybe some of the others will chime in at some point.
Paul.
Could we get comparison specs between the RX-8 original water pump and your better replacement water pump?
Registered User
Joined: Aug 2006
Posts: 792
Likes: 2
I'm also not understanding the issue between the more efficient Mazmart water pump and the underdrive pulley.
If the new mazmart water pump is more efficient than the OE water pump than why would there be any problems at low rpms? I would think the higher efficiency of the mazmart water pump + underdrive pulley = (at least equal) OE water pump at low rpms.
At high rpms the problem was the OE water pump would cavitate/stall. The underdrive pulley would prevent this. Would this not be the same for Mazmart water pump and underdrive pulley?
I understand the underdrive pulley would reduce how much coolant the mazmart water pump could flow, but it would still be working. An OE pump with standard pulley would be stalling.
Overall I'm saying is that the Mazmart water pump should still work with the underdrive pulley. Which would be overall better for performance of your car, just Mazmart water pump or Mazmart water pump + underdrive pulley, would be something determined by dyno chart or driver.
The main suppose benefit of the underdrive pulley was being able to get to higher revs faster and a slight HP increase (like 2 HP). To not want to use an underdrive pulley, the argument would have to be that a Mazmart water pump being driven at the standard speed of the OE pulley is helping cool the engine "X" more efficiently so that you are getting a "gain in usable HP" that is greater than the sight HP gain or revving faster given by a underdriven pulley. "Gain in usable HP" = less HP to drive water pump? and HP gain from cooler engine vs hotter engine.
If the new mazmart water pump is more efficient than the OE water pump than why would there be any problems at low rpms? I would think the higher efficiency of the mazmart water pump + underdrive pulley = (at least equal) OE water pump at low rpms.
At high rpms the problem was the OE water pump would cavitate/stall. The underdrive pulley would prevent this. Would this not be the same for Mazmart water pump and underdrive pulley?
I understand the underdrive pulley would reduce how much coolant the mazmart water pump could flow, but it would still be working. An OE pump with standard pulley would be stalling.
Overall I'm saying is that the Mazmart water pump should still work with the underdrive pulley. Which would be overall better for performance of your car, just Mazmart water pump or Mazmart water pump + underdrive pulley, would be something determined by dyno chart or driver.
The main suppose benefit of the underdrive pulley was being able to get to higher revs faster and a slight HP increase (like 2 HP). To not want to use an underdrive pulley, the argument would have to be that a Mazmart water pump being driven at the standard speed of the OE pulley is helping cool the engine "X" more efficiently so that you are getting a "gain in usable HP" that is greater than the sight HP gain or revving faster given by a underdriven pulley. "Gain in usable HP" = less HP to drive water pump? and HP gain from cooler engine vs hotter engine.
I don't buy Kool-Aid
Joined: Apr 2004
Posts: 8,823
Likes: 2
From: Vegas Baby!
We will be releasing and promoting our pump on our new website (To be announced soon). Pump sales without promotion have been interesting. We've sold them to people as far away as China and United Arab Emirates for forced induction vehicles.
Some users will remain un-named by their own request for various reasons. Maybe some of the others will chime in at some point.
Paul.
Some users will remain un-named by their own request for various reasons. Maybe some of the others will chime in at some point.
Paul.
I have a 2004 AT 8 and live out in Las Vegas. Will this fit my car?
Thanks,
Gil
I'm also not understanding the issue between the more efficient Mazmart water pump and the underdrive pulley.
If the new mazmart water pump is more efficient than the OE water pump than why would there be any problems at low rpms? I would think the higher efficiency of the mazmart water pump + underdrive pulley = (at least equal) OE water pump at low rpms.
At high rpms the problem was the OE water pump would cavitate/stall. The underdrive pulley would prevent this. Would this not be the same for Mazmart water pump and underdrive pulley?
I understand the underdrive pulley would reduce how much coolant the mazmart water pump could flow, but it would still be working. An OE pump with standard pulley would be stalling.
Overall I'm saying is that the Mazmart water pump should still work with the underdrive pulley. Which would be overall better for performance of your car, just Mazmart water pump or Mazmart water pump + underdrive pulley, would be something determined by dyno chart or driver.
The main suppose benefit of the underdrive pulley was being able to get to higher revs faster and a slight HP increase (like 2 HP). To not want to use an underdrive pulley, the argument would have to be that a Mazmart water pump being driven at the standard speed of the OE pulley is helping cool the engine "X" more efficiently so that you are getting a "gain in usable HP" that is greater than the sight HP gain or revving faster given by a underdriven pulley. "Gain in usable HP" = less HP to drive water pump? and HP gain from cooler engine vs hotter engine.
If the new mazmart water pump is more efficient than the OE water pump than why would there be any problems at low rpms? I would think the higher efficiency of the mazmart water pump + underdrive pulley = (at least equal) OE water pump at low rpms.
At high rpms the problem was the OE water pump would cavitate/stall. The underdrive pulley would prevent this. Would this not be the same for Mazmart water pump and underdrive pulley?
I understand the underdrive pulley would reduce how much coolant the mazmart water pump could flow, but it would still be working. An OE pump with standard pulley would be stalling.
Overall I'm saying is that the Mazmart water pump should still work with the underdrive pulley. Which would be overall better for performance of your car, just Mazmart water pump or Mazmart water pump + underdrive pulley, would be something determined by dyno chart or driver.
The main suppose benefit of the underdrive pulley was being able to get to higher revs faster and a slight HP increase (like 2 HP). To not want to use an underdrive pulley, the argument would have to be that a Mazmart water pump being driven at the standard speed of the OE pulley is helping cool the engine "X" more efficiently so that you are getting a "gain in usable HP" that is greater than the sight HP gain or revving faster given by a underdriven pulley. "Gain in usable HP" = less HP to drive water pump? and HP gain from cooler engine vs hotter engine.
OEM pump cavitates at high rpm... underdrive pulley prevents this... but also flows less at idle/low rpms that is bad
Mazmart pump flows better all the way through the rev band without cavitating.... you could put an UD pulley on it... but why? for 2 horses??? for 2hp why would you want to mess with something that is already very sufficient, at the risk still of possibly not flowing enough at idle/low rpm?
I'm also not understanding the issue between the more efficient Mazmart water pump and the underdrive pulley.
If the new mazmart water pump is more efficient than the OE water pump than why would there be any problems at low rpms? I would think the higher efficiency of the mazmart water pump + underdrive pulley = (at least equal) OE water pump at low rpms.
At high rpms the problem was the OE water pump would cavitate/stall. The underdrive pulley would prevent this. Would this not be the same for Mazmart water pump and underdrive pulley?
I understand the underdrive pulley would reduce how much coolant the mazmart water pump could flow, but it would still be working. An OE pump with standard pulley would be stalling.
Overall I'm saying is that the Mazmart water pump should still work with the underdrive pulley. Which would be overall better for performance of your car, just Mazmart water pump or Mazmart water pump + underdrive pulley, would be something determined by dyno chart or driver.
The main suppose benefit of the underdrive pulley was being able to get to higher revs faster and a slight HP increase (like 2 HP). To not want to use an underdrive pulley, the argument would have to be that a Mazmart water pump being driven at the standard speed of the OE pulley is helping cool the engine "X" more efficiently so that you are getting a "gain in usable HP" that is greater than the sight HP gain or revving faster given by a underdriven pulley. "Gain in usable HP" = less HP to drive water pump? and HP gain from cooler engine vs hotter engine.
If the new mazmart water pump is more efficient than the OE water pump than why would there be any problems at low rpms? I would think the higher efficiency of the mazmart water pump + underdrive pulley = (at least equal) OE water pump at low rpms.
At high rpms the problem was the OE water pump would cavitate/stall. The underdrive pulley would prevent this. Would this not be the same for Mazmart water pump and underdrive pulley?
I understand the underdrive pulley would reduce how much coolant the mazmart water pump could flow, but it would still be working. An OE pump with standard pulley would be stalling.
Overall I'm saying is that the Mazmart water pump should still work with the underdrive pulley. Which would be overall better for performance of your car, just Mazmart water pump or Mazmart water pump + underdrive pulley, would be something determined by dyno chart or driver.
The main suppose benefit of the underdrive pulley was being able to get to higher revs faster and a slight HP increase (like 2 HP). To not want to use an underdrive pulley, the argument would have to be that a Mazmart water pump being driven at the standard speed of the OE pulley is helping cool the engine "X" more efficiently so that you are getting a "gain in usable HP" that is greater than the sight HP gain or revving faster given by a underdriven pulley. "Gain in usable HP" = less HP to drive water pump? and HP gain from cooler engine vs hotter engine.
Paul.
-C
https://www.rx8club.com/series-i-do-yourself-forum-73/diy-flex-lite-variable-fan-speed-controller-123326/