7mgte vs 5mgte /w 7m head

[drumminforev]

is it possible to put a 7m head on 5m

and what are the difference to go 7m that are better than just boosting a 5m

 

[johnathan1]

I would just go with a 7MGTE...you will make more power than with the 5M.

 

[drumminforev]

Why? 0.2L sure it will make a little more torque, but for cost to HP ratio is what i am talking about here

specifically why is it better other than literage. Yes its 4valve per cyclinder but Boosted how much will this matter, so dont say that it "flows better" unless its really significant

 

[johnathan1]

4 valves per cylinder flows better than 2.

 

[pimptrizkit]

i have wanted to do this aswell, in theroy, well my therory, it's possible, and you would have a 2.8L 24v turbo motor. which would be teh shit! lol

if the bore's are the same dia, best to use the turbo piston's

 

[drumminforev]

I will be upgrading to forged pistons and rods. Does anyone have any real info on what makes the 7m better other than 2wice the valves

 

[trydrew]

Don't know if this'll help but bigaaron has some good comparison pics here: http://www.supramania.com/forums/showthread.php?t=33823

 

[rocketman]

i might be able to help u get parts.. i was in the junk yard yesterday.
i seen 10 supras there i am going back today .. pm me ifu want more parts

 

[drumminforev]

Well i am a mk2 supra guy so mostly i need mk2 parts and everything neccesary for the swap 7mgte

 

[rocketman]

its all good.. holla at me..

 

[bigaaron]

Check this out:
Bigaaron's 5M crank in a 7M thread

5m block has no oil squirters, only one knock sensor hole, and the late model 7m block is reinforced to be stronger then the 5m block.

 

[drumminforev]

what years are later model, and what does reinforced mean...thicker sleeves? and how much would any of this matter for 400whp

(oil squirters can be added to the 5m right?)

 

[bigaaron]

what years are later model, and what does reinforced mean...thicker sleeves? and how much would any of this matter for 400whp

(oil squirters can be added to the 5m right?)

The first post in my thread has comparison pics of the late model 7m vs 5m vs 2jz. It would not be possible to add oil squirters to the 5m block.

 

[drumminforev]

Does it matter then to have oil squirters. Which way is faster for less $? 5mgte or 7mgte

 

[bigaaron]

Stick with the 7mgte if cost, time, or maximum hp is important to you.

 

[drumminforev]

Why is that...if the 5m outflows the 7m

 

[rocketman]

its called Rod Knock.. the Enemy of any Turbo motor..
no oil squiter = headaches!

 

[bigaaron]

Why is that...if the 5m outflows the 7m

The 5m head doesn't outflow the 7m head without costly modifications.
The 5m rods are longer and thinner. read: weaker
The oil squirters are not a must, but there is a reason they are on the turbo motors.
The shorter stroke will be good for higher rpm, but the reduction in displacement will decrease horsepower slightly.

I think the payoff will be in the performance aspects like throttle response and smooth power delivery.