XR8tt
Active Member
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- 2,758
- Location
- Sydney Australia
The new V8's here go through about a litre over 10,000 klrs..
It dosn't sound like lifters, it sounds like loose pistons to me... I'll also say it is all speculation. Some say it is the dual VVTi.... I'd be happy if I am wrong. Toyota says that machining precision has been improved so only one piston size is required, yet the 2UR-GSE is still select fit... how precise can they be?
Is that piston slap or could it be noisy lifters?
This engine uses hydraulic lifters which is a bit of an oddity for Toyota. Maybe they don't have their lifter design sorted yet?
We were moaning the other day about the poor quality SBC motors that come from the factory with audible piston slap, and the dealers claim it's "normal".
I would never have thought that Toyota would allow this in their motors.....
The alloy block too..We suspect they were sent where there's no lemon laws...The 2uz also had cold start piston slap. The only recent sbc i know of to have piston slap in the U.S. was the early 6.0 truck engine, but it was revised shortly after like 2001.
I'd forgotten the TRD SC was available for this engine.
Sorry but that piston just looks like an accident waiting to happen. No way would I try to push any boost or elevated combustion temps with that setup. It certainly does have light weight going for it, though.
I've forgotten, did Toyota provide piston crown oil squirters on this motor?
David, your photo expose on this motor has really been enlightening. Thus far, from a performance perspective I don't like:
The tangless rod bearings
The rods themselves
The piston design
Can't wait to see the heads and valves to see if they have any redeeming qualities. To me, this motor looks like it'll be a real money pit to hotrod.