I ask this over on the general disscussion board, but I never got an answer. What is the difference between the 4.0 motor in the DI's and the 4.0 in the DII's? Thanks.


Ranger

 

D1 have a GEMS motor and the D11 has a Bosch motor. the block is the same its the intake and fuel injection thats different

 

The front cover and timing set are different, but yeah, mostly the intake and sensors

 

Then why is it that the DII's have all the head gasket problems but the DI's don't? If the differences are only with the injection system and sensors it doesn't make sense.

 

Its because of the coolant that DII's come from the factory with.

http://www.sancarlosradiator.com/dex-cool_pics.htm

http://www.consumeraffairs.com/autom...m_dexcool.html

Dex-Cool is corrosive and it eats gaskets if it is not properly maintained.
You must check the Ph balance of it once a year and adjust the Ph as needed.
Is it best in my opinion to just do a complete coolant flush and then use any all aluminum safe coolant you want.
I prefer Peak Global.

 

Thanks for the answers. I was thinking it was some type of mechanical problem.

 

D1's had just as many problems as the D2. They failed about 60K. They have all been fixed by now. It was caused by the composition of the gaskets.

Dexcool is only corrosive if it comes into contact with atmosphere, like when you have a leak.

 

No they dont, they do have head gasket problems but nowhere even close to DII's and Freelanders, both came with Dex-Cool both blow head gaskets like clockwork in the 60-70k range.
Throttle body heaters on DII's leak constantly, DI's dont.
The biggest cooling problem on a DI is the radiator becoming clogged because the owner is not servicing the cooling system often enough.
My head gaskets are original.

 

As are mine.

 

I think mine are as well.