Need some advice Rebuild or Swap

[drogon]

Hi I am simi new to this forum. Let me start out with some background, My dads been a Mech for toyota/lexus for 20 odd years been working on cars with him my hole life(just maintanance and stock rebuilds etc. We have a 67 Chevelle project all motor:evil2:. Recently came accross a 90 supra NA. Its my DD but its got a little less than 200k on it, Needs a rebuild soon. Been doing lots of readings for NA-t wanted to stay NA but from what I read you cannot get much power out of a NA. My question is would it be better to go NA-t route rebuild engine with forged internals stand alone ect and piece together a turbo and IC or would it be easier to do a 1jz or 2jz swap? Ive looked around for a 7mgte but it would be just as much for a 1 or 2 jz in my area. Im really only looking for a reliable DD with 350-400 wrhp(gotta have a fun DD :naughty: ). Wondering what the best route would be without going over kill on $ but I dont mind as long as its done right.

 

[drogon]

Also this would be my first boosted motor really excited for hearing a BOV when I shift lol

 

[sheedy126]

honestly, if you swap a 7mgte in there 350 hp on a stock ct26 is doable. on only 11 lbs i was putting down 310 rwhp and 337tqr.

this was with a Maft pro piggy back computer, 272 cams, full 3"exhaust, other bolt on upgrades..
now ive gone to bigger things, but i definitely think a 7mgte will get you where you want to go and be the cheapest route

 

[scottiedawg66]

Using a jdm motor with out rebuilding is a roll of the dice. Building a 7m yourself you would know what you have. Choice is yours.

I was super picky about the front clip and motor set i bought i did a compression test, and picked a motor with toyota oem oil and air filters. After doing oil pump, timing and serp belts, gaskets, seals, and my swap. I was greeted with blown turbo seals on my first start up.

 

[atmperformance]

Using a jdm motor with out rebuilding is a roll of the dice. Building a 7m yourself you would know what you have. Choice is yours.

I'm with this guy. I could have bought a 1jz for what i spent on my 7m rebuild but knowing the 7m was built correctly makes it all worth it.

 

[leftynridge]

To do forged internals on any of these set ups would cost money. If I'm reading correctly your saying you can get a 2j for the same cost as a 1j and 7m . Honestly if that's the case I would go with a 2j. 350-400hp isn't a problem with any of those setups but with a 2j your working with newer technology and newer electronics. All of your 7m stuff used are at least 20 years old.

 

[drogon]

Thanks for all the replies my clutch master went out so I was figuring that out lol, the only reason I was thinking a rebuild is because I would know it would be good and if I went with forged internals I know it would last like scottiedawg66 and ATMPreformance said. Would I need to swap my w58 to an r154 for my power goals? I also figure it would be cheaper/easier to just rebuild my 7mge for boost and buy a better than the stock ct turbo and run AEM I don't like piggy backs lol but I don't know if my ge electronics would work or what all I would need from the gte. I don't want to do a 7mgte swap bc the engine cost as much as a 1j w/154 or a 2j w/o a tranny. Either way I go tho sounds like a rebuild would be a must.

 

[drogon]

Thanks for all the replies my clutch master went out so I was figuring that out lol, the only reason I was thinking a rebuild is because I would know it would be good and if I went with forged internals I know it would last like scottiedawg66 and ATMPreformance said. Would I need to swap my w58 to an r154 for my power goals? I also figure it would be cheaper/easier to just rebuild my 7mge for boost and buy a better than the stock ct turbo and run AEM I don't like piggy backs lol but I don't know if my ge electronics would work or what all I would need from the gte. I don't want to do a 7mgte swap bc the engine cost as much as a 1j w/154 or a 2j w/o a tranny. Either way I go tho sounds like a rebuild would be a must.