Engine Quest 0331 Head Questions

[big66440]

I have a new Engine Quest (same as the Clear Water) head I'll be installing on my 89 Comanche soon, I know the ports are higher on the HO heads and my question were if it's necessary to port match the renix intake to the HO head? does any one have personal experience doing so with the cylinder heads sold by these suppliers? reason I ask is I'm not sure if there's enough material in the area that needs to be ground, thank you.

[cruiser54]

You're using an 0331 head? That's an oddball head. 

 

The 91 to 99 heads work really well on the Renix engines. You can just use the intake/exhaust gasket for the Renix intake manifold.

 

I have match ported a few, but it's not really necessary. 

[big66440]

2 hours ago, cruiser54 said:

You're using an 0331 head? That's an oddball head. 

 

The 91 to 99 heads work really well on the Renix engines. You can just use the intake/exhaust gasket for the Renix intake manifold.

 

I have match ported a few, but it's not really necessary. 

Thanks cruiser,I know it’s a bit of an oddball but I’d rather have a brand new casting than rely on the shady machine shops around me to prep a used head, and it seems the 0331 head is the only one offered new by suppliers. 

[cruiser54]

because they cracked. 

I would do exactly the opposite. 

I'm not sure your intake and exhaust will bolt up properly to the 0331. 

Be sure to research it. 

[gogmorgo]

Edelbrock was casting heads at least pre-pandemic. Might be an option. 

[big66440]

7 hours ago, cruiser54 said:

because they cracked. 

I would do exactly the opposite. 

I'm not sure your intake and exhaust will bolt up properly to the 0331. 

Be sure to research it. 

The new 0331 castings are reinforced in the crack prone areas to eliminate that issue, I've done research on peoples experience with them and they seem to be holding up really well. I have the new 0331 on the bench and made sure everything lined up properly for the install, it seems the only issue so far is the raised ports on the intake, I started blending in the ports today  and everything seems to be going very good.

[big66440]

7 hours ago, gogmorgo said:

Edelbrock was casting heads at least pre-pandemic. Might be an option. 

I wish I had the money to buy an Edelbrock head.

[cruiser54]

I understand about the new heads. They came about as a result of the originals cracking.

I just hope everything bolts up like it should. 

[big66440]

1 hour ago, cruiser54 said:

I understand about the new heads. They came about as a result of the originals cracking.

I just hope everything bolts up like it should. 

Thanks Cruiser,I’ll keep you guys updated. 

[Limeyjeeper]

The Clearwater 0331 heads had a thicker deck to prevent the cracking with the original 0331 heads so you will be fine. Clearwater makes a good head. It looks a bit different as it has the casts for the coil pack bolts. Other than that it is pretty much the same. They might not have the coolant temp sensor tap at the back of the head. The alternative is to find a 0331 TUPY head. These are the heads that Clearwater copied. The TUPY 0331 head fixed the cracking problem.