Help with premix
09-14-04, 08:48 PM
#1
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Help with premix
Ok guys my OMP is going bad. Before it gets really bad I just want to disconect it and premix. I got some 2 cycle twc3 engine oil. Do i pour the whole bottle in when i fill up the whole tank? Also how do i disconect the oil metering pump? Thanks
09-14-04, 08:50 PM
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seems the general consensus is to mix the oil at 100:1 ratio (one ounce of oil/gallon of gas) and you'll need some kind of block off plate for the OMP. I'm not sure where you can get one... i'm planning to just make one out of a sheet of alum or steel
09-14-04, 08:53 PM
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I used 1/4" aluminum to make mine - a hacksaw goes right through it. 
I mix at 140:1, but you can blame that on the size of the MMO bottles.
His profile says s4, so his ECU won't miss the pump. Even if the OMP isn't failing, he won't be doing any harm by switching to premix. He'll arguably be better off...
I mix at 140:1, but you can blame that on the size of the MMO bottles.
His profile says s4, so his ECU won't miss the pump. Even if the OMP isn't failing, he won't be doing any harm by switching to premix. He'll arguably be better off...
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09-14-04, 08:59 PM
#9
You unhook the mechanical arm from the TB/MOP and then unbolt the MOP itself. YOu block off the injectors with the proper sized bolts. The details are all in my pre-mix write-up. Search for it under my name and you will find it. It is a few pages long. But the first page is the write-up.
Santiago
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09-14-04, 09:35 PM
#10
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Originally Posted by Amur_
I used 1/4" aluminum to make mine - a hacksaw goes right through it.
I mix at 140:1, but you can blame that on the size of the MMO bottles.
His profile says s4, so his ECU won't miss the pump. Even if the OMP isn't failing, he won't be doing any harm by switching to premix. He'll arguably be better off...
I mix at 140:1, but you can blame that on the size of the MMO bottles.
His profile says s4, so his ECU won't miss the pump. Even if the OMP isn't failing, he won't be doing any harm by switching to premix. He'll arguably be better off...
And you need to watch your ratio pretty close... too much will lead to the octane being lowered too much and knocking or detonation
09-14-04, 09:36 PM
#11
Former Moderator. RIP Icemark.
Originally Posted by 1987RX7guy
You unhook the mechanical arm from the TB/MOP and then unbolt the MOP itself. YOu block off the injectors with the proper sized bolts. The details are all in my pre-mix write-up. Search for it under my name and you will find it. It is a few pages long. But the first page is the write-up.
Santiago
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09-14-04, 09:40 PM
#12
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Originally Posted by Icemark
MMO is not the same as TWC3 pre-mix oil. I would not use MMO as a TWC3 replacement.
And you need to watch your ratio pretty close... too much will lead to the octane being lowered too much and knocking or detonation
And you need to watch your ratio pretty close... too much will lead to the octane being lowered too much and knocking or detonation
09-14-04, 09:45 PM
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Originally Posted by Icemark
MMO is not the same as TWC3 pre-mix oil. I would not use MMO as a TWC3 replacement.
Okay, hang on a sec -> I'm not THAT retarded.
I use old, empty MMO bottles to carry the premix in, which then go in my spare tire well. An empty MMO bottle holds about 13oz...
09-14-04, 09:48 PM
#14
Former Moderator. RIP Icemark.
Originally Posted by scathcart
Ever done the calculation for the lowering of octane with pump gas by using the standard 128:1 premix ratio? You get more variance in octane levels just by switching gas stations.
But intresting enough, that I had a conversation with a couple people about this same subject at 7 stock last weekend... and low and behold had some pre-detonation on my way back when running at around 100:1 ratios. Increasing the ocatane by mixing with a mid-grade gas solved the problem at once.
But as a reminder I am using advanced timing and modified from stock A/F ratios (and it was about 100F out). So my experience with it should hardly be held as an example for all non turbo FCs.
Last edited by Icemark; 09-14-04 at 09:51 PM.
09-14-04, 09:49 PM
#15
Former Moderator. RIP Icemark.
Originally Posted by Amur_
Okay, hang on a sec -> I'm not THAT retarded.
I use old, empty MMO bottles to carry the premix in, which then go in my spare tire well. An empty MMO bottle holds about 13oz...
I use old, empty MMO bottles to carry the premix in, which then go in my spare tire well. An empty MMO bottle holds about 13oz...
09-14-04, 10:06 PM
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What ratio should I use if I'm keeping my OMP for now, and I just want a little added protection from some pre-mix? (don't have a cat to foul up or anything).
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