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Location:
Aucks NZ
Registered:
June 2002
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3tgte/2tgeu hybrids
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Sun, 02 March 2003 20:11
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im doing a bit of research into this as i have the parts for it and a ke70 converted to jdm te71 spec.
engines are two '82 te71 gex2 2tgeu's, one '83 te71 2tgeu and '83? ta63 carina 3tgteu
a toymods search has revealed the following posts:
http://www.toymods.org.au/msgboard/index.php?t=msg &goto=61777&rid=686&S=3926
d79bbf20a22ee938e32b064ad3d7
http://www.toymods.org.au/msgboard/index.php?t=msg &goto=21070&rid=686&S=3926
d79bbf20a22ee938e32b064ad3d7
i was wandering if anything went ahead following these posts?
one concern i have is that the oil pump shafts are definately different! where the 2tgeu dizzy comes out the block and is driven by a dummy cam and the shafts continue down to the pump. 3tgteu however has the dizzy hole blocked off but still has a bush below it to hold the oil pump shafts in place which are driven by the dummy cam also. the 3tgte dizzy comes out the
side of the head and driven off the intake cam.
my idea is to use the 3tgte block and utilising the 2tgeu head, intake and dizzy arrangement, with aftermarket exhaust manifold and garrett turbo and 3tgteu efi gear, -injectors, ecu and knock control but with std te71 2tgeu igniter/coil and spark wiring. (tricked a little for boost) (ecu is fuel only)?
what i have yet to find out is whether it will all bolt uptogether without mods?? how to set up the oil pump? are the oil pumps the same capacity? what have other people done? im hoping i can use the 2tgeu oil pump arrangement in the 3tgte block as the engine size is the same (different stroke tho) which should theoretically use the same size pump. only concern maybe the extra heat generated by the turbo may require more oil flow??? anyways if anyone can contribute to my investigations id be greatly appreciative.
also from those posts linked above, ive fitted 3tgteu injectors into the '82 te71 2tgeu gex2 which did run them fine. tho the engine ran hell rich with sooty exhaust and lumpy idle and stutters a bit when revved. i measured the injector resistance and all being around 2.2-2.4ohms (2tgeu and 3tgteu).
cheers
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Club President
I supported Toymods
Location:
Sydney
Registered:
May 2002
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 Re: 3tgte/2tgeu hybrids
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Mon, 03 March 2003 03:15
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The oil pumps interchange.
Use the 3TGTEU pump tho as they are a Higher volume !
Yes i am Still building my 2T-GTEU butit is still along way from finished. I will be using coil packs so no Dizzy but I can't see any reason the 2TGEu dizzy wouldn't work ?
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I supported Toymods
Location:
melbourne.victoria.austra...
Registered:
June 2002
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Re: 3tgte/2tgeu hybrids
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Mon, 03 March 2003 03:22
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like rod says - the 2TGEU dizzy should work fine.
i'm building a 2T-TEU at the moment but mine will kinda run on straight gas via a gasresearch setup.
as you can see the 2TGEU dizzy i'm using is a close fit to the 3T-EU throttle body...
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Location:
Cabramatta, NSW
Registered:
May 2002
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Re: 3tgte/2tgeu hybrids
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Mon, 03 March 2003 03:34
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Oh my! Nice runners!
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Location:
Canberra
Registered:
May 2002
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Re: 3tgte/2tgeu hybrids
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Mon, 03 March 2003 11:45
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Man you are going to have to sort out the valve to piston clearance scene. 3TGT pistons with 2TGEU valves, sorry they don't match, you will have to have the pistons flycut to accommodate the LARGER 2TGEU valves. Been there done that.
Regards Chuck.
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Location:
Hornsby, N.S.W
Registered:
September 2002
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Re: 3tgte/2tgeu hybrids
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Mon, 03 March 2003 12:10
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looks very tidy!!!
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Club President
I supported Toymods
Location:
Sydney
Registered:
May 2002
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Re: 3tgte/2tgeu hybrids
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Mon, 03 March 2003 22:19
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Chuck,
I am using forged pistons in my Hybrid so this was not a concern for me. I am just wondering tho if it is needed with stock 3TGTEU pistons ??
The 2TGEU and the 3TGTEU have the same size valves ?
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Location:
Aucks NZ
Registered:
June 2002
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Re: 3tgte/2tgeu hybrids
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Tue, 04 March 2003 10:00
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ok im getting lazy here but
has anyone researched using 2tgeu pistons? im thinking theres got to be extra height either in the 3tgteu block or in the 2tgeu pistons and/or conrods to counter the extra stroke of the 3tgte???
to 'flycut' meaning mill the valve clearances deaper? i could do that but at the expense of strength? anyone tried it with success? the 3tgte pistons are weak as they are so those forgies sound like the answer! $$$
as to valve sizes i havn't got a clue, usually the n/a cams have more duration/lift which i would think would be more problem than actual valve diameter?? something i'll have to spend hours trying to research 
ChuckLandwehr: do you know which specific 2tgeu/3tgteu you used for your hybrid? there are definite variations between early and late specs.
this project is for drift so im after low boost high compression style if possible so theres no off boost lag or low rpm turbo lag/ mid rpm boost surge found with larger turbo's. looking at an rb20det t25 bb turbo or s14/s15 t28 bb 
laters
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I supported Toymods
Location:
melbourne.victoria.austra...
Registered:
June 2002
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Re: 3tgte/2tgeu hybrids
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Tue, 04 March 2003 20:22
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i'm not really after "drift" capability with mine, but, will be using an rb20det non roller bearing turbo and 8.5:1 (or maybe higher, still deciding) compression (but only running 7-10psi, intercooled, and, also using LPG)
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Club President
I supported Toymods
Location:
Sydney
Registered:
May 2002
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Re: 3tgte/2tgeu hybrids
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Tue, 04 March 2003 23:35
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AE25,
All the T series engine use the same size Rods. They vary in strength but are all the same length (Exculding the 1400cc T engine) The 3TGTEU and 2T, 2TGEU etc also all use the same basic block design. there are some minor differences but the deck height is the same on all of the. It is the Pin height in the piston itself that counters the increased stroke of the 3T crank, Hence the need for 3T style pistons and the inability to use 2TGEU pistons with a 3T crank.
Yes flycutting a standard or cast piston does have limitations. You would be surprised however how far you can go. And yes flycutting is increasing the recease for your valves in the top of the piston.
Your cam specs will indeed dictate how big a flycut you will need. The thicker the base of the piston the deeper you can go at the expense of increased piston weight.
The first series 2TG (88220 Head) has smaller valves than its predessesors. The 88222 head thru to the 88262 head all have the same size valves which are the same size as the 3T-GTE valves.
Oh I also have a Ball Bearing R32 Series 2 Skyline Turbo for sale if your interested. Drop me an email if you are
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Location:
Aucks NZ
Registered:
June 2002
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Re: 3tgte/2tgeu hybrids
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Sun, 09 March 2003 08:55
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hey cool
that sort of info you can't find on the net 
im thinkin... since you have to flycut the 3tgte pistons to suit the extra lift of the 2tgeu cams, then why not swap the 3tgteu cams into the 2tgeu head? ever researched this? not sure if there are any differences apart from the extra cog to run the 3tgte dizzy
actually the only reason i'm researching putting the 2tgeu head on is that i don't want the intake going over the cam cover.
i have more thoughts now. will the 2tgeu intake manifold fit/bolt to the 3tgte head? (the runners anyway- the plenum will hit the dizzy i believe) if this is the case then it could be possible to modify the plenum/throttle so that it fits around the 3tgte octopus dizzy? hmm or even an 18rgeu intake??? 
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Location:
Lake Macquarie
Registered:
July 2002
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Re: 3tgte/2tgeu hybrids
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Sun, 09 March 2003 10:46
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Rod i finally got my engine together and found out that T series rods are not the same, I used the 3tgteu rods and we had std 2t bearings, the rods look exactly the same except for the oil hole. it misses by enough to be a bastard.
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Club President
I supported Toymods
Location:
Sydney
Registered:
May 2002
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Registered:
May 2002
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Location:
Aucks NZ
Registered:
June 2002
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Re: 3tgte/2tgeu hybrids
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Thu, 13 March 2003 11:35
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im getting more thoughts, cripes there must be something wrong with me 
keep the 3tgte nearly internally stock, head and all. but remove the intake and dizzy. either replace dizzy with 2tgeu item and run aftermarket ecu with quad igniter/coils or modify a crank angle sensor to run the coils. this way the huge 8plug dizzy can be removed from the head making more room for a custom forward facing intake...
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