A guy I know has bought an ST185 rally/race car and is planning to do targa in it this year.
The last owner had made major mods and has proved to be majorly unreliable.
After 3 engines he put a non turbo bottom end in it to make it run so he could sell it. Anyway, it run a bearing.
The car has had numerous gearbox problems too.
So we think the deal it to buy a complete s/h ehgine and box and fit it in.
The car already had a link computer.
What I'm after is ome advice on which model 3SGTE and box should we put in it, and what other mods usually made good gains without loosing reliability?
I've got an engine... but for serious stuff (like Targa) I would suggest getting a genIII out of a st205...
You could get reliability and performance out of a genII fairly easily though...
Decision is...
Spend lots on a newer "bare" engine and hope to replace less... or spend less on an older engine and plan to replace everything anyway...
Buy Chickenman's motor and trailer and use that block as a starting point. Either an ST205 gearbox or perhaps get some custom strengthened gearsets (if thats not out of the budget)
What exactly where the gearbox issues?
1988 KE70 Wagon - Slowly rusting 1990 NA6 MX-5 - because reasons 2018 Ranger - Because workcar 1997 FD3S RX-7 Type R - all brap, all the time OMG so shiny!
Hence why I said to use his block as a starting point, hes obviously got a few parts there
Also, what mods have been done? Just so we can get a better idea of why its breaking so often.
1988 KE70 Wagon - Slowly rusting 1990 NA6 MX-5 - because reasons 2018 Ranger - Because workcar 1997 FD3S RX-7 Type R - all brap, all the time OMG so shiny!
Well there is that. By the sounds of its not though, it hasnt had enough running time to do that.
The only guarantee you're not gonna get a shagged motor is to take one from a running car
1988 KE70 Wagon - Slowly rusting 1990 NA6 MX-5 - because reasons 2018 Ranger - Because workcar 1997 FD3S RX-7 Type R - all brap, all the time OMG so shiny!
to fix the g/box problems... ensure bung is tightend
for the targa, seeing as its such a long way (both race distance and from timaru!) id say a rebuild is a must.... crazy not too imo.
an st205 engien would be great! but id imagine them a little hard to find... st185 ones are out there... but probably thrashed....
the gen one gear clusters are wider in apperance and mesument to the later boxes
the are also considerably heavier
this is why the 165 syncros die with normal use
later on they went to the dual synco setup and lighter gear rings
how bout this ben
you back up what you say with some evidance
the first gen mr2 uses the same internals as the 185 box the 165 is differnt again
how do i know ive had both apart
these both have slightly smaller internals than a 165 and aw11s/c box witch are internally compatable
the reason for the size differance
id say its got somthing to do with the hard diff lock they have this would put a lot of pressure on the gearsets and as a first off toyota made it to not fail
the 165 facelift and 185 has a viscous coupling that would absorb a fair bit of the linked front/rear axel combating that happens
i made comment that this is the wrong place to ask this sort of question and you provided exactly why
i gave accurate info and you combat it with "internet" provided info(you and i both know your hands on fall short of knowing this personally)
this is exactly why people round here get so $$% up with misinformation and crap
ill say it again wrong place to ask for this kind of info
most that will reply have never even pulled a gearbox down let alone had both in there hands to do comparasion with