MMO-Caution as a premix
#54
Intended acceleration
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It looks like MMO is a really good solvent for built-up carbon crud, so it makes sense that it might help out if you've got a buildup. But at the same time, it might be possible to have "too much of a good thing".
#59
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So if the engine looked really clean inside but the engine died because of a fuel injector issue, how was the MMO bad? A clean surface isn't necessarily one that is wearing down quickly. If there was no lubrication and it was pure metal on metal contact, you'd know it.
I'm not saying that I recommend MMO. I don't use it and never will. However I'm not going to base any conclusions on an engine failure from a fuel injector on how clean the inside was due to premixing. Regardless of what it was. Then again how much carbon did they expect to see at 15K miles?
I'm not saying that I recommend MMO. I don't use it and never will. However I'm not going to base any conclusions on an engine failure from a fuel injector on how clean the inside was due to premixing. Regardless of what it was. Then again how much carbon did they expect to see at 15K miles?
#61
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I think MMO is fine for a premix. In one of my first gen rx7s, I installed a rebuilt series 4 13B, and blocked off the oil metering pump. I premixed exclusively with MMO, 1 oz per gallon. That motor had around 35K on it when I sold the car and still ran like a champ. The motor was built using used housings by the way. There are some pretty through threads on rx7club talking about using MMO as a premix.
If MMO did not work as a premix that motor would have failed LONG before 35K.
If MMO did not work as a premix that motor would have failed LONG before 35K.
#62
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Could not really get by this morning to get my pics but tech says he has some on his cell and will see if he can load them to a comp and email me. My last engine did have the reflash and on my newest engine he turned up the omp a little bit more. Once again im not sure how much carbon is supposed to be in a 15k engine but he obviously thought it was way too clean on BOTH rotors and housings. I believe thats what led him to believe the premix might be an issue. Two of the seals on the front rotor were blown so it failed compression test all around.
front at just below 300rpm 2.0 2.0 2.2
rear at just below 300rpm 7.0 7.4 7.3
front at just below 300rpm 2.0 2.0 2.2
rear at just below 300rpm 7.0 7.4 7.3
#65
Trained true Killers
mmmmmmmm leg humping. I know what your saying I was slammed for making my own exhaust instead of buying one from certain vendors they ate my thread up and **** it out so much for being inventive
#66
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Just funnin' with you.
#69
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thanks again dude for sharing what has happened
I do have a tendency to follow the rotary aviation guys somewhat when it comes to some issues--one being pre mix. believe me they do not want to be at 5K feet and have anything go wrong. A lot of them give MMO a good rating.
OD
I do have a tendency to follow the rotary aviation guys somewhat when it comes to some issues--one being pre mix. believe me they do not want to be at 5K feet and have anything go wrong. A lot of them give MMO a good rating.
OD
#70
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thanks again dude for sharing what has happened
I do have a tendency to follow the rotary aviation guys somewhat when it comes to some issues--one being pre mix. believe me they do not want to be at 5K feet and have anything go wrong. A lot of them give MMO a good rating.
OD
I do have a tendency to follow the rotary aviation guys somewhat when it comes to some issues--one being pre mix. believe me they do not want to be at 5K feet and have anything go wrong. A lot of them give MMO a good rating.
OD
Keep in mind premixing MMO is nothing new when it comes to a rotary... its been done for ages, long before the rx8 came out. READ RX7CLUB.COM PEOPLE. It kills me to see many many rotary issues that have been totally figured out on RX7CLUB eons ago and over here people keep trying to reinvent the wheel.
#74
is adjusting valve lash
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^THIS
Keep in mind premixing MMO is nothing new when it comes to a rotary... its been done for ages, long before the rx8 came out. READ RX7CLUB.COM PEOPLE. It kills me to see many many rotary issues that have been totally figured out on RX7CLUB eons ago and over here people keep trying to reinvent the wheel.
Keep in mind premixing MMO is nothing new when it comes to a rotary... its been done for ages, long before the rx8 came out. READ RX7CLUB.COM PEOPLE. It kills me to see many many rotary issues that have been totally figured out on RX7CLUB eons ago and over here people keep trying to reinvent the wheel.
no different from piston motor to rotary motor. just because it has same basic concept does not mean newer generations will take whatevers of the past years with equal success.
this subject being on a fluid, just as all fuel are just fuel... would you pump leaded fuel into an rx-8?
LEAD, act as an lubricant... but you think we can use that stuff without affecting the cat, then everything else? with just ONE single component in the way...
didn't think most older engines suffered valve seat failure due to a change in fuel formulation in the 70s?
think again! just wanted to clarify that these two engine designs behaves VERY differently.
#75
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older rotary engines from what i understand are... quite different.
no different from piston motor to rotary motor. just because it has same basic concept does not mean newer generations will take whatevers of the past years with equal success.
this subject being on a fluid, just as all fuel are just fuel... would you pump leaded fuel into an rx-8?
LEAD, act as an lubricant... but you think we can use that stuff without affecting the cat, then everything else? with just ONE single component in the way...
didn't think most older engines suffered valve seat failure due to a change in fuel formulation in the 70s?
think again! just wanted to clarify that these two engine designs behaves VERY differently.
no different from piston motor to rotary motor. just because it has same basic concept does not mean newer generations will take whatevers of the past years with equal success.
this subject being on a fluid, just as all fuel are just fuel... would you pump leaded fuel into an rx-8?
LEAD, act as an lubricant... but you think we can use that stuff without affecting the cat, then everything else? with just ONE single component in the way...
didn't think most older engines suffered valve seat failure due to a change in fuel formulation in the 70s?
think again! just wanted to clarify that these two engine designs behaves VERY differently.
None of this has any effect to how well MMO will premix in any rotary engine in comparison to the renesis. It is EXACTLY the same.