1 fast z Posted December 7, 2007 Share Posted December 7, 2007 I am looking for the port spacing on the RB26DETT motor. Are the EX ports evenly spaced? Is the 25 a different spacing as well? If it is different what is the spacing on that head. Quote Link to comment Share on other sites More sharing options...
stony Posted December 7, 2007 Share Posted December 7, 2007 I dont have the port spacing but the only difference between the rb25 and the rb26 is the location of the exh manifold studs. that is why you cant interchange exhaust manifolds. some of the studs are located in opposite corners. Quote Link to comment Share on other sites More sharing options...
Careless Posted December 8, 2007 Share Posted December 8, 2007 not the best source of info, but from the ebay manifold pictured here, i'd say it's pretty close Quote Link to comment Share on other sites More sharing options...
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