Originally Posted By: 1JZ_E46
Originally Posted By: A_Harman
Originally Posted By: 1JZ_E46
Thanks for the help guys...
For those that aren't familiar, the toyota 1JZ engine is a 2.5L turbo inline 6 that came in many Japanese toyota cars. Very popular upgrade here in the states. It is essentially a de-stroked 3.0L Mk4 Supra engine.
E46 is a 99-06 BMW 3 series.
I thought that was a cross-breed swap, but have never heard of anybody putting a Toyota engine in a BMW.
Seems like the Luftwaffe will fly over and bomb your house into rubble for that.
How much is the engine built up for higher power? Higher lift cams with higher load valve springs would require break-in. Is the 1JZ a slider or roller lifter engine?
It is actually becoming a very popular swap for the E36 and E46 chassis (3 series). The engines are relatively cheap, and the bottom-ends can hold north of 600HP with ease thanks to factory forged internals. A guy local here has a 2JZ swapped into his early 90s 5 series.
The cams (272 duration), valve springs (increased seat pressure), and retainers (titanium) are all new. It is a slider style cam, with the camshaft sitting on top of buckets (which hold a shim). The cam actually makes contact/slides on the shim, which rests on the top of the bucket. Some of the shims are new, some are re-used.
OK, higher load valve springs on slider follower cams. Are you running used shims on new cam lobes? Don't do that.
Definitely a need for a high-ZDDP break-in oil.
The honed cylinders don't need it as much as the valvetrain.
Check out the Joe Gibbs Driven website for their break-in oil system. They seem to have a good system figured out where they are using ZDDP that coats the wear surfaces at lower temperatures to quickly build up a protective layer. And when you first run the engine, don't let it run at idle speed, get it up to 2500 rpm or so to reduce the cam contact stress due to high spring load.
Originally Posted By: A_Harman
Originally Posted By: 1JZ_E46
Thanks for the help guys...
For those that aren't familiar, the toyota 1JZ engine is a 2.5L turbo inline 6 that came in many Japanese toyota cars. Very popular upgrade here in the states. It is essentially a de-stroked 3.0L Mk4 Supra engine.
E46 is a 99-06 BMW 3 series.
I thought that was a cross-breed swap, but have never heard of anybody putting a Toyota engine in a BMW.
Seems like the Luftwaffe will fly over and bomb your house into rubble for that.
How much is the engine built up for higher power? Higher lift cams with higher load valve springs would require break-in. Is the 1JZ a slider or roller lifter engine?
It is actually becoming a very popular swap for the E36 and E46 chassis (3 series). The engines are relatively cheap, and the bottom-ends can hold north of 600HP with ease thanks to factory forged internals. A guy local here has a 2JZ swapped into his early 90s 5 series.
The cams (272 duration), valve springs (increased seat pressure), and retainers (titanium) are all new. It is a slider style cam, with the camshaft sitting on top of buckets (which hold a shim). The cam actually makes contact/slides on the shim, which rests on the top of the bucket. Some of the shims are new, some are re-used.
OK, higher load valve springs on slider follower cams. Are you running used shims on new cam lobes? Don't do that.
Definitely a need for a high-ZDDP break-in oil.
The honed cylinders don't need it as much as the valvetrain.
Check out the Joe Gibbs Driven website for their break-in oil system. They seem to have a good system figured out where they are using ZDDP that coats the wear surfaces at lower temperatures to quickly build up a protective layer. And when you first run the engine, don't let it run at idle speed, get it up to 2500 rpm or so to reduce the cam contact stress due to high spring load.