I was just curious if anyone has done the research on it. I tried to search the forums but couldn't yield anything that dealt with trying to do Frankenstein motors. There wasn't much info either through a google search. Was just curious since they're in the same engine family and honda guys are getting great results with their K20A heads on the K24s.

I know I know, honda's are lego cars. Still just curious if they are even remotely swapable. I remember when people were curious about 1ZZ and 2ZZ and found there wasn't much of anything you could swap between the two other than the crank. Or maybe some crank swap to stroke the 2GR?

Just curious, hope I don't get flamed for being curious.

 

hmm you gotta ask iSuxeL about this!!!

 

Lets just make it easier and frank our IS' haha. Lets get somebody to make us some motor mounts

 

http://en.wikipedia.org/wiki/Toyota_GR_engine


They're pretty radically different... single vs. dual vvti being one major reason, significantly different lifter/valve setups, etc...

 

IME, Toyota does things to prevent this. Like with the JDM vs. USDM turbos on the 2JZ-GTE - zero interchangability. Studs are in the wrong places, bolt holes are in the wrong places, passages don't align so gaskets won't seal...

Toyota is very familiar with what goes on at Honda and they've designed their stuff to make similar swaps just short of impossible.

 

who's iSuxeL? Is he a member I can contact?

Kurtz, yea they're very different I mean the difference in weight between a 2GR-FE and a 2GR-FSE is 40lbs (22ish lbs according to wiki). But I wasn't thinking of swaping valve train bits, but the entire head or swapping the bottom end of the 1GR onto the 2GR to see if we would be able to stroke out the motor. Just like the valve train on K20s and K24 can be very different you can still swap heads. The problem with the 1ZZ and 2ZZ is that you couldn't swap the heads, everything to bolt them up is different, only the crank was able to be swapped over where people call it a 3ZZ. I think it allowed them to stroke the 2ZZ to just under 2.0L

I mean plenty of people were complaining that there is no way to boost these engines because of the CR, the 1GR has a CR of 10:1, sounds easier to lower that than the 2GR's 11.8:1. And there are a lot more 1GR's getting boosted.

 

I'm not sure about that. 1JZ heads fit on 2JZ bottom ends. Some people like the 1JZ head more for some reason and swap or some swap bottom ends on ther 1JZ to get the 3.0L. Same goes for the 5SFE and 3SGE, some people have swapped over the G head from a 3SGTE onto a 5SFE to kind of make a frankenstine 5SGTE engine, but they hit the wall when it comes to get it tuned, but the heads are swappable. There are other instances with older engines like the 20R/21R/22R swapping or 4A/7A motors, but the 3S/5S and the 1JZ/2JZ are the newer ones that I'm familiar with. And of course a lot of the swapping with the F heads vs G heads stuff. The only one that I know where you can't just swap heads or lots of parts in general within the same family is the ZZ family as seen that only the crank seems swappable to stroke out the 2ZZ.

It's just that toyota really hasn't been doing G heads for a long time and there really hasn't been much of a reason to swap stuff between engines so I don't think people are doing it for the most part now. I mean the last G head in the past 10 years was the 2ZZ-GE outside of the new IS-F motor. And even then the G head on the 2UR doesn't seem that big of a deal since the 2UR-FSE makes more TQ and just a few HP less... If the 2UR-FSE came out back in 06 I think I might have just gone with that motor instead, lol. I'm sure the G head in the IS-F flows really well, just on paper doesn't look like it would be worth swapping on a regular 2UR.... maybe someone might get giddy with their IS-F and see if they can gain 0.7L with the 3UR block, but who knows.