Mattt Posted August 26, 2012 Share Posted August 26, 2012 I'm after a factory 4m crown engine and ENGINE MOUNTS to trade for my current 186 engine and engine mounts. My car has declaration and motor was rebuilt 100,000kms age. Motor is in good condition apart from oil leaks. I have plans involving the 4m head and a 7mgte block so am looking for a trade. Will happily swap all parts over on spot with help from trader. This motor is ideal for the crowns, good torque and still firly economical for age. New engine to be a good runner or cash my way to be provided depending on condition. My car is manual and donor car would need to be manual or appropriate parts supplied with donor. Quote Link to comment Share on other sites More sharing options...
japawagons Posted August 27, 2012 Share Posted August 27, 2012 MS6* Series Crowns just like all Crowns are a solid chassis with the body mounted on top. So there will be no sub frame. Quote Link to comment Share on other sites More sharing options...
Seedy Al Posted August 27, 2012 Share Posted August 27, 2012 yeah, from what I have seen in the past with holden powered crowns, is that they tend to cut the chassis mounts off the chassis and weld new ones on. So ideally you will need to make new ones, or cut some off an originally chassis. I dont really have anything to help you any more as I have sold all my stuff Quote Link to comment Share on other sites More sharing options...
Mattt Posted August 27, 2012 Author Share Posted August 27, 2012 Duh, ofcourse they are. Cutting and welding won't be a problem. I didn't even think to look just assumed there would be a removable cross member. No worries al, cheers anyway. I'm going to keep the crown obviously. Would love your century motor but money restraints limit me to this idea for now. Also for anyone interested I'm running a w55 gearbox so the bell housing attached is for a w series. Quote Link to comment Share on other sites More sharing options...
Seedy Al Posted August 27, 2012 Share Posted August 27, 2012 are you sure you have a W55? most of the older manuals had a W-50, which are different. the early w-50 boxes have 4 bolts in a squeare formation to hold the bell housing to the Box, where as W-55's have 7 or whatever. but Splines are generally the same for drive shaft Quote Link to comment Share on other sites More sharing options...
Mattt Posted August 27, 2012 Author Share Posted August 27, 2012 Fairly sure. As the gearbox is not factory. It was put in with the 186. I will look a bit closer tonight but I know its not a crown box. Quote Link to comment Share on other sites More sharing options...
Yowzer Posted August 27, 2012 Share Posted August 27, 2012 I don't think a 4M head fits a 7M block. I would confirm, but someone stole my 4M head... Quote Link to comment Share on other sites More sharing options...
fuel Posted August 27, 2012 Share Posted August 27, 2012 W50 box would be all iron casing while W55 would be alloy casing with a chance of a iron sandwich plate in the middle. Quote Link to comment Share on other sites More sharing options...
myk00l Posted August 27, 2012 Share Posted August 27, 2012 W50 box would be all iron casing while W55 would be alloy casing with a chance of a iron sandwich plate in the middle. W50 has alloy tail section, cast iron centre, alloy bellhousing. Quote Link to comment Share on other sites More sharing options...
fuel Posted August 27, 2012 Share Posted August 27, 2012 yeah true that. still pretty obvious difference between W50 and W55. Quote Link to comment Share on other sites More sharing options...
Mattt Posted August 27, 2012 Author Share Posted August 27, 2012 I don't think a 4M head fits a 7M block. I would confirm, but someone stole my 4M head... This could pose a problem....... I figure I'm going to have to do some mill work to modify the water jackets to line up but was hoping it would bolt up sweet. Quote Link to comment Share on other sites More sharing options...
durty Posted August 27, 2012 Share Posted August 27, 2012 what is the advantage of a 4m head on a 7m block? is it easier to remove the head for replacing head gaskets? Quote Link to comment Share on other sites More sharing options...
KKtrips Posted August 27, 2012 Share Posted August 27, 2012 Isn't 4M chain drive and 7M cambelt?? I could be and most probably am wrong though. Google will help me answer this and delete this post if I am wrong.. BRB Quote Link to comment Share on other sites More sharing options...
KKtrips Posted August 27, 2012 Share Posted August 27, 2012 Google says I may be right?? Quote Link to comment Share on other sites More sharing options...
Mattt Posted August 27, 2012 Author Share Posted August 27, 2012 Yeah that doesn't worry me. I work for a large engineering company so that sort of thing I should be able to make work with the help of a few designers and some cnc machines The plan I had was to take the 4m head, mount it to the 7mgte block, modify the water jackets as required, rebuild the head with different springs and a semi race cam, get the crank or crank pulley modified to accept the chain drive crank gear. Have the block modified to accept the tensioner as required or make an adaptor and run a sc12 super charger with dual su carbs. Why? Looks period, would sound epic, fun engineering project should make ok hp figures with good torque figures and its different. Plus if I can get a 4m and a cracked head or bhg 7m for cheap the whole project should come in at roughly 2k max. Quote Link to comment Share on other sites More sharing options...
Mattt Posted August 27, 2012 Author Share Posted August 27, 2012 what is the advantage of a 4m head on a 7m block?is it easier to remove the head for replacing head gaskets? I'm assuming that's sarcasim? If the research I've done is correct the reason the 7ms blow head gaskets is related to the head design not the block design. Quote Link to comment Share on other sites More sharing options...
sheepers Posted August 27, 2012 Share Posted August 27, 2012 ummm, dude. i dont even know where to start. just, just, fuck it. carry on. Quote Link to comment Share on other sites More sharing options...
Mattt Posted August 27, 2012 Author Share Posted August 27, 2012 Lol feel free man, I'm always open to any info I can get. Criticism etc. Quote Link to comment Share on other sites More sharing options...
Mattt Posted August 27, 2012 Author Share Posted August 27, 2012 Could a mod please change the title to something about 4m head and 7mgte block and move this to the tech section. Ta Quote Link to comment Share on other sites More sharing options...
Spencer Posted August 27, 2012 Share Posted August 27, 2012 Man just get a 2jz, run it on tripples and make a 4m valve cover fit it like this twin cam 5.0 Coyote with old school 427 'cammer' valve covers you will have untold issues fucking with M series shit Quote Link to comment Share on other sites More sharing options...
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