Why Premix?
#26
Rotary Evolution
those are series 4 with about 175k miles on them. the cleaned looking housing was the first i used to experiment on resurfacing with and was in poorer condition than the used housing below it. i considered them both to be garbage before working out the process.
they both actually came from the same motor.
they both actually came from the same motor.
Last edited by Karack; 10-31-2011 at 01:16 PM.
#27
Out of NYC
iTrader: (1)
You do realize not everyone has time to go through every post on this forum right? Some of us work, and don't have time to post 4,000 times. This is about the most hostile forum i think I've ever been on, if you don't feel like answering the question don't post. If no one asked questions (even occasionally the same one) there wouldn't be much of a forum.
learn how to use a "PROPER" keyword.
I have 6-7 times more post count than him. so I can be an a-hole, right ?
LEARN HOW TO SEARCH
#28
Out of NYC
iTrader: (1)
those are series 4 with about 175k miles on them. the cleaned looking housing was the first i used to experiment on resurfacing with and was in poorer condition than the used housing below it. i considered them both to be garbage before working out the process.
they both actually came from the same motor.
they both actually came from the same motor.
I mean honestly I would never bother with re-surfacing, cuz I think new part saves me a lot of time, but some budget builders might find your service useful.
#29
Rotary Evolution
i have about 6 engines in service with them now having only started doing them about 3 months ago none of them have been giving me any sign of issue. in fact i just was in california last week and tuned an engine with my resurfaced housings, an S4 9.4:1 turbo motor. i thought he had it broken in but in fact when i arrived i came to find out the motor had 30 mins of idling and the hybrid turbo i built him still had the assembly oil on the housing... i tuned it anyways and the motor pulled quite impressively for having about an hour of no load run time.
i do recommend strictly premixing on them though, as the chrome surface is thinned close to half original thickness.
vacuum was about average @ 15-16"Hg at 960 RPM with a street ported motor with minimal break in.
Last edited by Karack; 10-31-2011 at 01:37 PM.
#30
for the first part of the thread, yeah, some people here think we're driving ferrari's or something.
anyone, I'd much rather premix than not, safety margin in my eyes, especially as the OMP ages, and doesn't potential do it's job as efficiently.
anyone, I'd much rather premix than not, safety margin in my eyes, especially as the OMP ages, and doesn't potential do it's job as efficiently.
#31
Out of NYC
iTrader: (1)
i have about 6 engines in service with them now having only started doing them about 3 months ago none of them have been giving me any sign of issue. in fact i just was in california last week and tuned an engine with my resurfaced housings, an S4 9.4:1 turbo motor. i thought he had it broken in but in fact when i arrived i came to find out the motor had 30 mins of idling and the hybrid turbo i built him still had the assembly oil on the housing... i tuned it anyways and the motor pulled quite impressively for having about an hour of no load run time.
i do recommend strictly premixing on them though, as the chrome surface is thinned close to half original thickness.
vacuum was about average @ 15-16"Hg at 960 RPM with a street ported motor with minimal break in.
i do recommend strictly premixing on them though, as the chrome surface is thinned close to half original thickness.
vacuum was about average @ 15-16"Hg at 960 RPM with a street ported motor with minimal break in.
well, at least when the OMP dies on the 8, the ECU will sense it and nothing else will happen other than limp mode (it totally sucks, just saying) and the cost of remove/install the OMP (and whatever crap u need)
for the S5 FC, if the OMP dies, most of the time it will "take" the ECU down with it ... lucky there are so many used ECUs around, otherwise oh man not gonna be funny.
the nozzle on the other hand might be the problem. 9k found out his 8's injectors are clogged. same thing for me on my FC and I have to clean it with brake cleaner.
speaking of S5 OMP (or whatever), it should be rebuildable ... the motor is made by Denso, the rest is just metal and a couple rubber gasket here and there ... and Mazda wants 1.5K for that ****? I'm surprised no one thought about trying to find the right part and Rebuild them ... I know OMP is not the best thing but I can see a big market right there ... S5, S6, or RX-8.
Last edited by nycgps; 10-31-2011 at 02:15 PM.
#32
Rotary Evolution
can try the seafoam trick in the other thread through the OMP lines.
i just hate thinking of adverse effects in the jets though, i haven't dissected any but if they have a simple rubber diaphragm then they can be susceptible to failure from some detergents.
i hate seafoam but i'd have to think it's less harsh on rubber parts than carb/brake cleaner is.
i just hate thinking of adverse effects in the jets though, i haven't dissected any but if they have a simple rubber diaphragm then they can be susceptible to failure from some detergents.
i hate seafoam but i'd have to think it's less harsh on rubber parts than carb/brake cleaner is.
#35
Super Moderator
a little side note about the center of the apex seal lubrication. the center of the apex seal really does not need as much lubrication as the 2 outside edges of the apex seals, which is why with the renesis the injectors were split and moved to those 2 locations.
the oil metering system is a joke and always has been.
the oil metering system is a joke and always has been.
Center of Apex does not need much lubrication!!!...OK...care to explain why Mazda added two center Injectors on the Series 2 2009 RX-8??, with an all new EMOP System?
Why are you posting peripheral RX-7 Rotor Housings?,they DON'T have the same MOP system as the Series 1 RX-8.
The S2 RX-8 Metering Oil System now used IS the best they have ever made for any Rotary.
It can only be bettered by a separate fresh oil supply tank and that will never happen.
#37
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Correct.
Karack's knowledge, as valuable as it is, is heavily RX-7 biased. He is still off the mark on some of the RX-8 / Renesis specific items. To my knowledge, side seals weren't a problem for the RX-7s.
Karack's knowledge, as valuable as it is, is heavily RX-7 biased. He is still off the mark on some of the RX-8 / Renesis specific items. To my knowledge, side seals weren't a problem for the RX-7s.
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