hey brownie i need some help over here...i have a 35ft mistress with eng's on 35 1/2 inch centers im installing gen 3's on and was talking to fred at trick he told me the gen 3's would fit 35" centers. i bought a pair of the gen 3's from mindi at doller and a pair from full throttle marine. the set i got from full throttle fits perfectly and i can fit my hand between the manifolds, the set i got from doller does't fit by about a 1/4 inch. the manifolds are the same with the exception of the flange. the set that fits has a flange about 3/8 of an inch thick the other set has a flange 3/4 of an inch thick! here are pics of the 2 sets, help mr. wizard......

If you will check your thread where you were asking about the GEN III I told you to be very careful about center distance. Have Brownie mill the thick flanges to match the thin flanges. Angle will be critical. I found that with a long through transom tailpipe in a transmission application the tail pipes need some kind of mid length support to maintain riser to tail pipe flange seal. Good luck. Joe Murray

Hey Ratman , couldn't you use the 3/8 flange on the two center manifolds and the 3/4 flange on the out board sides. Tom

not without cutting the outer edge of the engine compartment 1/2" on each side which im not wanting to do. i wasn't aware that they made two different dimension gen 3's, fred looked it up for me and told me they will fit 35" which the one set does.

. Have Brownie mill the thick flanges to match the thin flanges. Angle will be critical.. Joe Murray[/QUOTE]


Phil , That is what I would do in your case . Tom

i was hoping brownie would chime in here, was wondering why there is a difference in the first place, also wanted to be sure there is enougn meat there on these to cut with out hitting the water jacket.

They make two different styles , the ones I sent you were for close centers (tall deck , aftermarket heads (raised exhaust ports )they mill the regular ones down . The regular ones are the purple ones you have . When you order them you tell them your application and they will send you the apporiate manifold. Tom

We actually have three different widths. The narrowest ones usually have a problem with the valve covers. Take your fat ones to a local machine shop and have them milled to suit. First, look at the gap between the manifold and the valve cover and don't go narrower than that. Good luck......