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puretone · 11-07-2008, 08:21 PM

redtop head ONLY fits on redtop/greytop engine block.
blacktop head ONLY fits on blacktop engine block.
Pistons are the same pretty much, blacktop pistons are higher compression, so they will NOT work in redtop if I remember correctly.
The easiest thing to do is either stick to full retop or full blacktop, do NOT mix the two.
There is no engine block that is *safe* with 2 BAR boost, if it is not meant to be a turbo engine. Get ductile iron sleeves from Darton or something. Since what you are doing is going to cost ALOT of $$$$, I guess it makes no difference to you, so yes build the engine block to perfection.
I do not think the single/dual VVTi of either redtop or blacktop will help with making more power for turbo applications....it is only zu rühmen und sind kühl für Ihre blitzkrieg LOL

why not get a Celica GT4 WRC engine instead?????

11-07-2008, 08:21 PM	#24 (permalink)
puretone Beams Owners Group Join Date: Aug 2006 Location: Aruba, #1 BEAMS Engine on the Island Posts: 2,339 Thanks: 28 Thanked 57 Times in 56 Posts My Google Map iTrader Rating: (1/100% )	redtop head ONLY fits on redtop/greytop engine block. blacktop head ONLY fits on blacktop engine block. Pistons are the same pretty much, blacktop pistons are higher compression, so they will NOT work in redtop if I remember correctly. The easiest thing to do is either stick to full retop or full blacktop, do NOT mix the two. There is no engine block that is safe with 2 BAR boost, if it is not meant to be a turbo engine. Get ductile iron sleeves from Darton or something. Since what you are doing is going to cost ALOT of $$$$, I guess it makes no difference to you, so yes build the engine block to perfection. I do not think the single/dual VVTi of either redtop or blacktop will help with making more power for turbo applications....it is only zu rühmen und sind kühl für Ihre blitzkrieg LOL why not get a Celica GT4 WRC engine instead?????