Hello

I have a question. Is the 4G67 1.8l the same block with the 4G63.
I want bore of 85.5 and used my head and the 4G63 crankshaft.

I want run 42 psi and around 1000 whp.
At the moment had the car 900 Whp now i want a little more

The 4g67 has the same stroke, but a smaller bore. The 4g63 is a 85mm bore, the 4g67 is a 81.5mm bore. Basically same crank, but smaller bore.

It is the same block, he can handle 42 psi boost when i bore of 85,5 mm?

Glatto said:

It is the same block, he can handle 42 psi boost when i bore of 85,5 mm?

Click to expand...

What do you mean?

If it the same block, it isnt a problem to bore 85,5 it. I`m a little bit frightend if bore bigger and a many boost.

My ols blocke 4G63 6 bolt have not a problem with this boost.
Some people says it is not the same block, because of this my question.

Did you read my reply, it isn't the same block, it is a smaller bore, and a slightly shorter deck height. You likely will not be able to bore it 4mm larger, that is quite a bit. I would just look for another 4g63 block.

Thanks for the answer. I search better a 4G63 it is save.

4G67 EU bloc has the same deck height like the 6 bolt 4G63, he has also oil squirter and knock sensor.
Bore it to 85mm is not an problem but it need an torque plate for best results in my mind...

It is now the same block! What do you mean with a torque plate?

This thing : http://www.jmfabrications.com/store/products/4G63-Torque-Plate.html

Thanks. Have you with this plate the same compression? I have this not understand?

Look this thread for better help : http://www.dsmtuners.com/threads/torque-plate-non-torque-plate-need-builders-input.434680/

Thanks for the link.