found this on protegeclub. looks like it might be helpful.
Originally posted by BLK_TX3
Hello all,
I am from Australia and own a 4wd BPT powered Ford Laser which was released from the factory. Its basically a mazda GTX in a Ford Laser shell.
I just thought i would answer some common misconceptions about the GTR motor. There is a of rubbish posted on the internet about these motors and as a result they are being flogged for an inflated value.
Firstly I will cover the differences between the GTX and GTR motor:
As many of you have said the turbo is different - VJ23 on the GTR and VJ20 on the GTX.
The injectors are different - high flowing units on the GTR.
The Valves on the GTR are sodium filled to help dissapate heat.
The exhaust manifold is a better engineered design.
The rods are rated ro 600hp.
The Pistons are squeeze cast (not forged) and sligtly stronger than the stock GTX ones.
That is where the differences end. The block is not web stiffened as has been reported. The cam durations are identical and all other components of the engine is IDENTICAL.
If you get a stock GTX motor, replace the rods from the B6T motor which are rated to 600HP, drop in some decent forged pistons and utilise a decent size turbo running through a good front mount cooler you will have an engine that is just as reliable and producing far more power than a GTR unit. The only thing you will lack is sodium filled exhaust valves... whoopdy do.
Come to fordlaser.com where we have discussed the topic at legnth. I hope this has cleared up any misconceptions you may have had.
Hello all,
I am from Australia and own a 4wd BPT powered Ford Laser which was released from the factory. Its basically a mazda GTX in a Ford Laser shell.
I just thought i would answer some common misconceptions about the GTR motor. There is a of rubbish posted on the internet about these motors and as a result they are being flogged for an inflated value.
Firstly I will cover the differences between the GTX and GTR motor:
As many of you have said the turbo is different - VJ23 on the GTR and VJ20 on the GTX.
The injectors are different - high flowing units on the GTR.
The Valves on the GTR are sodium filled to help dissapate heat.
The exhaust manifold is a better engineered design.
The rods are rated ro 600hp.
The Pistons are squeeze cast (not forged) and sligtly stronger than the stock GTX ones.
That is where the differences end. The block is not web stiffened as has been reported. The cam durations are identical and all other components of the engine is IDENTICAL.
If you get a stock GTX motor, replace the rods from the B6T motor which are rated to 600HP, drop in some decent forged pistons and utilise a decent size turbo running through a good front mount cooler you will have an engine that is just as reliable and producing far more power than a GTR unit. The only thing you will lack is sodium filled exhaust valves... whoopdy do.
Come to fordlaser.com where we have discussed the topic at legnth. I hope this has cleared up any misconceptions you may have had.
Originally posted by BLK_TX3
Here is some more info i dug up on our board... go have a look. The guys discussing it know their stuff. Read the entire post as it reveals some very interesting info regarding the GTR motor.
Click here
Here is some more info i dug up on our board... go have a look. The guys discussing it know their stuff. Read the entire post as it reveals some very interesting info regarding the GTR motor.
Click here
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