can u visually id a diff gen 3stge?

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can u visually id a diff gen 3stge?

Postby Mr Revhead » Sun Oct 31, 2004 5:18 pm

got a custy with an mr2 thats had an engine conversion

it now needs a cambelt. as there is a coupla changes in these it poses a bit of a problem.
so is there an easy way to determine which engine it is while its still sitting in the car without ripping it to bits? otherwise the only option is to get both lots of parts to avoid having it in the shop for several days. which they arnt keen on doing
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Postby Al » Sun Oct 31, 2004 6:01 pm

Gen2 3sgte has the twin entry turbo, ceramics power on the inlet manifold, gen3 3sgte doesnt
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Re: can u visually id a diff gen 3stge?

Postby anthonym » Sun Oct 31, 2004 8:58 pm

Mr Revhead wrote:got a custy with an mr2 thats had an engine conversion

it now needs a cambelt. as there is a coupla changes in these it poses a bit of a problem.
so is there an easy way to determine which engine it is while its still sitting in the car without ripping it to bits? otherwise the only option is to get both lots of parts to avoid having it in the shop for several days. which they arnt keen on doing


There are heaps of visual differences, as Al says the stickers on the intake manifold are different, no AFM on the gen 3 is a dead giveaway, gen 3 has an oil/air seperator on the top of the cam cover, cam belt cover on gen 3 is black, gen 2 is grey with serrations. That should be enough, but there is more if you need it :D.
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Postby Mr Revhead » Mon Nov 01, 2004 8:49 am

what about the gen 1 to gen 2?
as thats what i suspect this ones got one of those
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Postby Al » Mon Nov 01, 2004 8:55 am

gen1 was only from st165...would someone go to the hassle of finding all the bits to make it work with an mr2?
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Postby MrBob » Mon Nov 01, 2004 9:20 am

Al wrote:gen1 was only from st165...would someone go to the hassle of finding all the bits to make it work with an mr2?


didnt Akane have this setup ? .. could be wrong.

oh, and I think the gen1 has a 2 piece cam cover, the gen 2, 3 have 1 piece.
Last edited by MrBob on Mon Nov 01, 2004 9:22 am, edited 1 time in total.
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Postby Mr Revhead » Mon Nov 01, 2004 9:22 am

ok then, how do u tell the diff between the 2 versions of gen 2??

theres a few changes in 91-05. some of which affect the cambelt tensioner.....
not to mention cams as well
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Postby Twolitre » Mon Nov 01, 2004 4:54 pm

MrBob wrote:oh, and I think the gen1 has a 2 piece cam cover, the gen 2, 3 have 1 piece.

Nope, gen 1 3sge has two piece cam cover, gen 1 3sgte has one piece cam cover.
As far as Gen 2 differences go, late Gen 2's have the smaller leads and clips on the dizzy cap whereas the early models don't.
What were the differences with the cambelt arrangement? Is it obvious on the epc or just different part numbers?
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Postby Malcolm » Mon Nov 01, 2004 5:03 pm

not all gen 2's have "ceramics power" on the intake manifold (or intercooler if it was a 185 motor)

as for the 2 models of gen 2, the later one has an extra stud on the exhaust manifold, on the cambelt end
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Postby anthonym » Mon Nov 01, 2004 8:10 pm

Mr Revhead wrote:ok then, how do u tell the diff between the 2 versions of gen 2??

theres a few changes in 91-05. some of which affect the cambelt tensioner.....
not to mention cams as well

I've rebuild both an early gen 2 (from a 90) and a gen 3 and the only difference that affects the cambelt is the oil pump pully, which is larger, hence the belt is different (extra tooth IIRC) The tensioner might be different but it's physically identical. The cams and sprockets are also physically the same, there may be minor differences but they are interchangeable.
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Postby Mr Revhead » Tue Nov 02, 2004 9:48 am

ok, thats the problem with the epc, i can only tell if the part number is different.

however they still list and carry both tensioners.... which says to me they are different in some way.... i found the tensioner and cams were diff part numbers didnt look any further.

the cam belts only change in 93-11 for the gen 3 change.
the exhaust cams are shown as changing in 91-12 and 93-11 meaning theres 3 of those. the inlet only has the one change.

nemisis is correct with the cambelt v pulley. the prob i had (now solved through other means) was which tensioners 2 use.
theres also 3 oil pumps with the same change date as the cams.
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