Hello I'm from the Toyota MR2 forums. I know what am I doing here...
Well I'm trying to put together a group buy for a GR family compliant dry sump system. I'm going through each of the communities that run the GR block family to see if anyone is interested.
The 2GR-FE is a popular swap into the old Toyota MR2 and these days I guess you can call it the poor man's lotus. But the 2GRFE is a great engine in its stock form but as you try to extract more power from it, you start running into issues.
First issue you have is the valve system. If you have ever thrown a rod or lotus told you that your going to need a new engine. Its because of the valve lifters bounce back and knock the rocker arms off at high RPM. Most of the time this will result in a stuck valve. The engine will bend rods, throw rods, bend valves, and punch holes in pistons ect... Its a combination of factors that cause them to bounce that is the inherent problem of the hydraulic valve lifters, oil pressure, and air in the oil from oil pump cavitation at high rpm.
Toyota knows this is a problem in the 2GRFE and the 2ARFE motors but since it is considered a lower class motor, it never got the revisions that they put in the UR family of motors in the Lexus. A solution to the valve lifter problem is to use GM ECOTech solid valve lifters. They drop right into place of the toyota hydraulic valve lifters.
Now the thing is that's a fine fix if you want your engine to last into the 8k range. But for a time attack car or a track car your going to need to fix the oil problems. Enter me I'm trying to put together a GR family compliant dry sump system. This will fix the oil pressure problems and with the addition of a water/air separator will fix the problem of air in the oil.
Now since dry sump systems are fairly expensive I'm trying to cut costs by making this system interchangeable between the GR family of engines. This includes the Evora, Tacoma, FJ, 4runner, and GR swapped cars.
You can see the thread of inquiry over at the Tacoma forums here and the start of my 2gr build here at the MR2 forums.
Well I'm trying to put together a group buy for a GR family compliant dry sump system. I'm going through each of the communities that run the GR block family to see if anyone is interested.
The 2GR-FE is a popular swap into the old Toyota MR2 and these days I guess you can call it the poor man's lotus. But the 2GRFE is a great engine in its stock form but as you try to extract more power from it, you start running into issues.
First issue you have is the valve system. If you have ever thrown a rod or lotus told you that your going to need a new engine. Its because of the valve lifters bounce back and knock the rocker arms off at high RPM. Most of the time this will result in a stuck valve. The engine will bend rods, throw rods, bend valves, and punch holes in pistons ect... Its a combination of factors that cause them to bounce that is the inherent problem of the hydraulic valve lifters, oil pressure, and air in the oil from oil pump cavitation at high rpm.
Toyota knows this is a problem in the 2GRFE and the 2ARFE motors but since it is considered a lower class motor, it never got the revisions that they put in the UR family of motors in the Lexus. A solution to the valve lifter problem is to use GM ECOTech solid valve lifters. They drop right into place of the toyota hydraulic valve lifters.
Now the thing is that's a fine fix if you want your engine to last into the 8k range. But for a time attack car or a track car your going to need to fix the oil problems. Enter me I'm trying to put together a GR family compliant dry sump system. This will fix the oil pressure problems and with the addition of a water/air separator will fix the problem of air in the oil.
Now since dry sump systems are fairly expensive I'm trying to cut costs by making this system interchangeable between the GR family of engines. This includes the Evora, Tacoma, FJ, 4runner, and GR swapped cars.
You can see the thread of inquiry over at the Tacoma forums here and the start of my 2gr build here at the MR2 forums.