studroes Posted January 13, 2009 Report Share Posted January 13, 2009 ok im getting parts around to put together a spare engine and i got a question about porting. im gonna be putting in a 4mil stroker and i picked up a set of cylinders very cheap from a buddy. they are trail ported cylinders but the only problem is that they were ported on a stock crank engine. is this gonna be a problem putting them on a 4mil or will they work? if its a problem what is the best solution? i def want the 4mil in there so if i have to change something its gonna hafta be the cylinders. thanks in advanced Quote Link to comment Share on other sites More sharing options...
LS1Inferno Posted January 13, 2009 Report Share Posted January 13, 2009 im not 100percnt sure but id u use a spacer plate u can still use ported jugs. but already ported jugs can not be rfeported for 4MIL Quote Link to comment Share on other sites More sharing options...
studroes Posted January 13, 2009 Author Report Share Posted January 13, 2009 so if i use a spacer plate instead of cut domes ill be ok you're saying? Quote Link to comment Share on other sites More sharing options...
blowit Posted January 13, 2009 Report Share Posted January 13, 2009 so if i use a spacer plate instead of cut domes ill be ok you're saying? That is a best guess unless you can share porting specs on the jugs. I think you will be best suited to have an engine professional examine your setup to make sure it will work with a spacer. Anything else may be a guess. Brandon Quote Link to comment Share on other sites More sharing options...
studroes Posted January 13, 2009 Author Report Share Posted January 13, 2009 ok i planned on usind cut domes but the crank i got did come with a spacer. if the porting wont work correctly with the crank will i be able to tell right away with the engine running? Quote Link to comment Share on other sites More sharing options...
blowit Posted January 13, 2009 Report Share Posted January 13, 2009 ok i planned on usind cut domes but the crank i got did come with a spacer. if the porting wont work correctly with the crank will i be able to tell right away with the engine running? No Quote Link to comment Share on other sites More sharing options...
AKheathen Posted January 14, 2009 Report Share Posted January 14, 2009 That is a best guess unless you can share porting specs on the jugs. I think you will be best suited to have an engine professional examine your setup to make sure it will work with a spacer. Anything else may be a guess. Brandon x2, you need to have a builder look at the juggs and tell weather to use a spacer, domes, or need new juggs for the stroker. when given the option, use cut domes Quote Link to comment Share on other sites More sharing options...
studroes Posted January 14, 2009 Author Report Share Posted January 14, 2009 alright thanks. what is the difference in porting between a 4mil and a stock crank? Quote Link to comment Share on other sites More sharing options...
Wildcardracing Posted January 14, 2009 Report Share Posted January 14, 2009 The heights that the ports are cut to achieve the same duration are different. The biggest difference in heights in the transfer ports. If it has been cut for a stock stroke crank you will have a chance of ending up with too much transfer duration for the 4mil. A spacer plate will only make this situation worse. My advice is to have a builder measure the ports to tell you if it can be done. Most of the time trail type ports can be modified for more stroke, but it all depends on how high they allready are. The other difference is that the floors need to be lowered to match the piston crown at BDC. Quote Link to comment Share on other sites More sharing options...
kawiking Posted January 14, 2009 Report Share Posted January 14, 2009 id get them reported for a 4 mil . Quote Link to comment Share on other sites More sharing options...
studroes Posted January 14, 2009 Author Report Share Posted January 14, 2009 if the builder i take them to says they wont work on a 4mil is there any way to get them to work without having to resleeve the cylinder? they are stock bore so id hate to ruin a good cylinder and dump a ton of money into them for just a back up engine. any suggestions would be great!! Quote Link to comment Share on other sites More sharing options...
Wildcardracing Posted January 14, 2009 Report Share Posted January 14, 2009 My suggestion in that case would be to find someone willing to swap you cylinders, some virgins for your ported ones. Other than resleeving there is no good way to accomplish it. Quote Link to comment Share on other sites More sharing options...
AKheathen Posted January 14, 2009 Report Share Posted January 14, 2009 i may be willin to trade, depending on the port work. if you can find out who did the port work, so i could talk to him. but it wold have to wait a month. find out first. Quote Link to comment Share on other sites More sharing options...
tony cub Posted January 14, 2009 Report Share Posted January 14, 2009 i have a set of stocks drag ported for a 4mill long rod with pistons.pm me if intrested Quote Link to comment Share on other sites More sharing options...
studroes Posted January 15, 2009 Author Report Share Posted January 15, 2009 i do have a set of cylinders that im running on my banshee now but they are bored 66.5 so there is nothing left. i guess if the ported cylinders arent gonna work for the 4mil i will resleeve the ones im running now and put the ported ones on the basically stock engine i have in the wheeler and once i get the other one all finished ill run that one. without the cost of the sleeves does anyone know about what price range i could be looking at? Quote Link to comment Share on other sites More sharing options...
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