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HybridZ

Immortal

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About Immortal

  • Birthday 05/02/1988

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  1. Well I am new and have tons of questions as I do my research pulling from every end of the Interwebs. I am going to be doing a stroker build starting next weekend with pulling the motor out of my 77 and I have some questions since this will be my first motor but I have tons of resources (people not wallet). the main questions I have is about the crank it seems like everyone that does the stroker wants the LD28 and I have one that I can get if thats the route I want to go but It raises questions in my mind if that is really the best choice or if so why. correct me if any numbers our wrong please because again this is from the research I have done and I have 0 first hand knowlege on any of these subjects. from what I gather: stock L28 crank has a storke of 79mm the LD28 crank has a stroke of 83mm so the reason you would want it is to increase your stroke since all the rest of the stats our the same (should fit right in) using the Ozdat calculator (to estimate) I have some questions about Bore/Stroke v.s. Rod/Stroke the typical build from what I have read is LD28 crank F53 Block head seems to very and then 240 rods with most likley custom pistons with this build I see 2 things that are appealing the Rod/stoke is very high 1.6xx range displacement with the 89mm pistons is the 3.1L and then the second highlight I see is the Max Rod Angle... as this number is lower than stock less friction and from what I gather more efficiency my question is rather than going with the LD28 crank and that setup I want mine to be more custom for one (rods and pistons on my build will be custom forged) but I was thinking what if I got a crankshaft Made for me... if I could keep all the journal size and such the same... so it would fit the same as a LD28 or a L28 but the stroke was something larger than 83.... at first I stumbeld on this idea because of an error in my searchings... I was looking into custom cranks and seen a custom SR20 crank that was 92mm and thought that sr20 was what I needed... but its not. Is it posible to have a Bore/Stroke ratio of over 1.... basicly with a custom crank thats above 88mm (the bore I am going for) with a custom crank at 92mm it would put me at a much larger displacement.. 3.3L the conserns I have is 1 that means i would need a shorter rod... so the Rod/Stroke Ratio suffers and would be closer to 1.4 and the max rod angle is closer to a stock L28 engine... the compression Goes WAY up I think too high from what ive read.... but I want a very hot cam.... like .495 lift is what I was looking at. should I dish my pistons since they will be custom to get my compression down from high 11's and if all this would potentially work would pump gas even be possible? I do have a complete build that I have thought up before this Idea but as the motor is coming out next weekend I need to start from the bottom up and find my crank. any help / ideas would be helpfull and I thank you all in advance
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