Guest lexispooled Posted September 13, 2006 Share Posted September 13, 2006 Has anyone tore down a vvti 2jzgte? There is some debate here in the US about the vvti engines having thinner rods then the USDM supra TT 2jzgte..Just wondering why toyota would use different rods in the late model GTE engine..Here in the US VVTi gte engines are hard to come by and very rare, there have only been 2 different findings and both seemed to suggest the same..Also could the aristo vvti and supra vvti be different internally? Also someone recently compared the internals to the IS300 2jzge internals and they appeared to to be the exact same, jus wondering how that could be since the GE engine is 10.5:1 compression and the GTE is 8.5:1..Was told even the part numbers cast into the pistons were the same, could it be a thicker headgasket? I wouldnt think that would be the only difference to drop compression from 10.5:1 to 8.5:1.. Quote Link to comment Share on other sites More sharing options...
merckx Posted September 13, 2006 Share Posted September 13, 2006 Has anyone tore down a vvti 2jzgte? There is some debate here in the US about the vvti engines having thinner rods then the USDM supra TT 2jzgte..Just wondering why toyota would use different rods in the late model GTE engine..Here in the US VVTi gte engines are hard to come by and very rare, there have only been 2 different findings and both seemed to suggest the same. Hi I've just checked the Toyota EPC(covers the VVTI aswell), the con-rods are the same in the VVTI as the ones in our UK spec car which are the same as your US car. part no - 13201-46040 Quote Link to comment Share on other sites More sharing options...
Jake Posted September 13, 2006 Share Posted September 13, 2006 Just to confirm what Merckx said; I've rebuilt a VVTi TT engine and replaced some of the rods and they are exactly the same as non-VVTi TT rods. the GE engine is 10.5:1 compression and the GTE is 8.5:1..Was told even the part numbers cast into the pistons were the same, could it be a thicker headgasket? I wouldnt think that would be the only difference to drop compression from 10.5:1 to 8.5:1..I would guess that the GE has a larger volume combustion chamber (in the head of course) Quote Link to comment Share on other sites More sharing options...
Ian C Posted September 13, 2006 Share Posted September 13, 2006 Has the GE really got forged and coated pistons, thicker ring lands, and oil squirters in the block? -Ian Quote Link to comment Share on other sites More sharing options...
JustGav Posted September 13, 2006 Share Posted September 13, 2006 Has the GE really got forged and coated pistons, thicker ring lands, and oil squirters in the block? -Ian I thought oil squirters were DEFINITELY not in the GE engine.... Quote Link to comment Share on other sites More sharing options...
Ian C Posted September 13, 2006 Share Posted September 13, 2006 I thought oil squirters were DEFINITELY not in the GE engine.... The Toyota service manuals back that up -Ian Quote Link to comment Share on other sites More sharing options...
garethr Posted September 13, 2006 Share Posted September 13, 2006 Also someone recently compared the internals to the IS300 2JZ-GE internals and they appeared to to be the exact same......was told even the part numbers cast into the pistons were the same......Part numbers or casting numbers? In the interest of economies of scale. I'd have thought it was quite possible that the N/A and TT pistons start as the same rough casting but are machined differently. Quote Link to comment Share on other sites More sharing options...
Guest lexispooled Posted September 14, 2006 Share Posted September 14, 2006 I thought oil squirters were DEFINITELY not in the GE engine.... they are not, where did I say that? I did have the squirters installed in my GE block few years back for lil more peice of mind.. Quote Link to comment Share on other sites More sharing options...
Guest lexispooled Posted September 14, 2006 Share Posted September 14, 2006 Part numbers or casting numbers? In the interest of economies of scale. I'd have thought it was quite possible that the N/A and TT pistons start as the same rough casting but are machined differently. casting numbers, you are probably right though.. Quote Link to comment Share on other sites More sharing options...
Guest lexispooled Posted September 14, 2006 Share Posted September 14, 2006 Here are some pics of the GE IS300 (silver) and the GTE vvti (gold) Quote Link to comment Share on other sites More sharing options...
Digsy Posted September 14, 2006 Share Posted September 14, 2006 I did have the squirters installed in my GE block few years back for lil more peice of mind.. I hope the oil pumps are the same, then. Oil squirters take a lot of oil out of the system. Quote Link to comment Share on other sites More sharing options...
Guest lexispooled Posted September 18, 2006 Share Posted September 18, 2006 I hope the oil pumps are the same, then. Oil squirters take a lot of oil out of the system. tuners here have done fine using the GE pump with oil squirters installed, one tuner even recommended the GE one over the GTE oil pump..Could always mod the pump I suppose for increased oil flow, thats what many are doing now for big hp. Quote Link to comment Share on other sites More sharing options...
Slide 2jz Posted May 8, 2016 Share Posted May 8, 2016 Any one know vvti and non vvti turbo engine conrod and engine internal differences Quote Link to comment Share on other sites More sharing options...
T2 MSW Posted May 8, 2016 Share Posted May 8, 2016 There are no differences, the bottom end internals are the same. Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted May 8, 2016 Share Posted May 8, 2016 The piston castings between TT and N/A are totally different. The TT pistons are cast with an oil cooled void in the crown. I would love to know how these American tuners are increasing the flow of the oil pumps... Quote Link to comment Share on other sites More sharing options...
Style Posted May 9, 2016 Share Posted May 9, 2016 VVTi rods are weaker as well are they not? Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted May 9, 2016 Share Posted May 9, 2016 Definitely the same parts used in the all the TT engines and the N/A none VVTi engines. I have never had a VVTi N/A engine apart, nor looked at the parts listings, they are so rare over here. Quote Link to comment Share on other sites More sharing options...
Style Posted May 9, 2016 Share Posted May 9, 2016 The NA VVTi engines have different, weaker rods than the non-VVti's. I just wasn't sure if the same applied to TT engines Quote Link to comment Share on other sites More sharing options...
James Posted May 9, 2016 Share Posted May 9, 2016 The NA VVTi engines have different, weaker rods than the non-VVti's. I just wasn't sure if the same applied to TT engines The VVTi NA has thinner rods than the non-VVTi NA. The non-VVTi and VVTi turbo engines are no different to each other in that aspect though. Quote Link to comment Share on other sites More sharing options...
j_jza80 Posted May 9, 2016 Share Posted May 9, 2016 Are the NA VVTi rods lighter too? Quote Link to comment Share on other sites More sharing options...
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