89-90 non intercooled vs intercooled

[Deere Jon]

When doing a conversion would it be worth the aggervation of an intercooled engine or would it be eiser to use a non intercooled engine? For making the intercooler fit in a gmc pickup.

 

[Philip]

Start with an intercooled one if you can find it. The nonintercooled engines had larger injectors bores. These have been noted with head cracking problems. If you post an add on here most likely someone would have the nonintercooled parts laying around. There have been 1st gen owners convert to intercooled on the older rigs.

 

[Deere Jon]

Thanks no text

Thank you for your word of caution

 

[JSpecht]

Start with an intercooled one if you can find it. The nonintercooled engines had larger injectors bores. These have been noted with head cracking problems. If you post an add on here most likely someone would have the nonintercooled parts laying around. There have been 1st gen owners convert to intercooled on the older rigs.

HEAD CRACKING ??? where do they crack and any way to prevent it ????

 

[Forrest Nearing]

the non-intercooled engines used an injector w/ a larger body at the head... this causes a thin spot in the head casting that has been known to crack. the only way to really prevent it is to keep the EGT's down...



honestly? I wouldn't worry about it... if it cracks, put a later head on it and keep on rolling...



Forrest

 

[JLEONARD]

I wouldn't worry about it... if it cracks, put a later head on it and keep on rolling...

True. They only cracked under a heavy duty cycle. Even then they will still run.

I have 146 K on mine and it's not cracked as far as I know. And all of the upgrade injectors are small body that will fit the modern head... there is an adapter bushing that makes up the difference. So no need to be concerned about that.

Jay

 

[JSpecht]

the non-intercooled engines used an injector w/ a larger body at the head... this causes a thin spot in the head casting that has been known to crack. the only way to really prevent it is to keep the EGT's down...



honestly? I wouldn't worry about it... if it cracks, put a later head on it and keep on rolling...



Forrest

When they crack they leak coolant outside of the motor or inside mine asaround 200,000 and can you see the crack