d.p.n.s Posted October 27, 2017 Share Posted October 27, 2017 discuss here Quote Link to comment Share on other sites More sharing options...
63Ragtop Posted October 27, 2017 Share Posted October 27, 2017 all the mk's! Quote Link to comment Share on other sites More sharing options...
d.p.n.s Posted October 27, 2017 Author Share Posted October 27, 2017 24 minutes ago, 63Ragtop said: all the mk's! Getting there.. Quote Link to comment Share on other sites More sharing options...
RUNAMUCK Posted October 28, 2017 Share Posted October 28, 2017 Only need a mk one, a mk four, and a Hyundai Stella to complete the set! Quote Link to comment Share on other sites More sharing options...
Nominal Posted October 28, 2017 Share Posted October 28, 2017 Pretty sure seedy al would sell his mk1 project. Quote Link to comment Share on other sites More sharing options...
d.p.n.s Posted October 28, 2017 Author Share Posted October 28, 2017 25 minutes ago, RUNAMUCK said: Only need a mk one, a mk four, and a Hyundai Stella to complete the set! hmmmm hyundai......intresting. Quote Link to comment Share on other sites More sharing options...
d.p.n.s Posted October 28, 2017 Author Share Posted October 28, 2017 19 minutes ago, Nominal said: Pretty sure seedy al would sell his mk1 project. i dont need the full set......unless a mk1 or a mk4 crossed my path .cheap or cheaper Quote Link to comment Share on other sites More sharing options...
bigfoot Posted October 28, 2017 Share Posted October 28, 2017 2 hours ago, RUNAMUCK said: Only need a mk one, a mk four, and a Hyundai Stella to complete the set! Mk4 and mk 5 are pretty much the same anyway 1 1 Quote Link to comment Share on other sites More sharing options...
d.p.n.s Posted October 28, 2017 Author Share Posted October 28, 2017 Just now, bigfoot said: Mk4 and mk 5 are pretty much the same anyway very true. Quote Link to comment Share on other sites More sharing options...
RUNAMUCK Posted October 28, 2017 Share Posted October 28, 2017 Not according to @- i5oogt - Quote Link to comment Share on other sites More sharing options...
d.p.n.s Posted October 28, 2017 Author Share Posted October 28, 2017 Out of all the cortinas the.mk4 and mk5 Are the closest looking to eash other Quote Link to comment Share on other sites More sharing options...
RUNAMUCK Posted October 28, 2017 Share Posted October 28, 2017 Kissing cousins? Quote Link to comment Share on other sites More sharing options...
d.p.n.s Posted October 28, 2017 Author Share Posted October 28, 2017 2 hours ago, RUNAMUCK said: Kissing cousins? mmmmmmmmmmmm kissing cousins 1 Quote Link to comment Share on other sites More sharing options...
datlow Posted February 23, 2018 Share Posted February 23, 2018 and possibly intercooler 1 Quote Link to comment Share on other sites More sharing options...
cletus Posted April 2, 2018 Share Posted April 2, 2018 On 10/28/2017 at 21:40, d.p.n.s said: a xf alloy head 4.1 with 200 bottom end (strokes it out...but unsure of how much). 200 has a shorter stroke so if its a 250 block, it will be smaller I seem to remember reading an article about the bore/stroke/rod length of a 250 being a bit of a cock up for high rpm use- so it would add up to use a shorter stroke crank, and a longer rod if you wanted to rev it harder 1 Quote Link to comment Share on other sites More sharing options...
d.p.n.s Posted April 2, 2018 Author Share Posted April 2, 2018 6 hours ago, cletus said: 200 has a shorter stroke so if its a 250 block, it will be smaller I seem to remember reading an article about the bore/stroke/rod length of a 250 being a bit of a cock up for high rpm use- so it would add up to use a shorter stroke crank, and a longer rod if you wanted to rev it harder When I first spoke to the guy that I bought it off I thought he was trying to explain the way the motor is stroked using 200 bottom end . But now after doing some researh this is how I see it It gives a longer rod to stroke ratio. Meaning the piston moves faster in the middle of the stroke .it' supposed to free up torque around the 7krpm range Quote Link to comment Share on other sites More sharing options...
d.p.n.s Posted April 2, 2018 Author Share Posted April 2, 2018 #cletus I just copied this from a Ford page on using 200 rods and pistons in a 250. Yeah those numbers are spot on Dave, as you said it makes a better angle on the crank as the longer rods makes the piston dwell at TDC longer so the crank can be further rotated around before the piston moves down the bore giving it a better angle to push on the crank offset if you can understand all that. Its like haveing longer arms on the crank of your pushie, while you try and push down when the peddle is directly above the crank it gets significantly easier to push the peddle down the further you rotate that crank around.Also because the piston dwells at TDC and BDC for longer it also means the the piston speed is increased because it has less time to move down the bore if that makes sense lol.But like dave said its not really going to make any more hp if you fitted it into a stocker or even a mild xflow, its only the big reving top end xflows that will see the benefits.Take a look at the stroker windsors, a 351 clevo will make HP and not much torque, thats the nature of cubes, but the 347W will make a little less HP but more torque and thats because of the longer stroke to bore ratio.Plus the pistons are almost half as light as they are a lot shorter so your rotating assembly gets a lot lighter too. Quote Link to comment Share on other sites More sharing options...
RUNAMUCK Posted April 2, 2018 Share Posted April 2, 2018 I might be way off, But I'm 99% sure that the aussie Corty diffs were the BW75 (25 spline) and the AU is a BW78 (28 spline) I'm not even sure if the 78 lsd nugget can be fitted into the 75 housing. The 78 spline is the same as the Ford Nine inch. You can buy cut the length axles which have a long length of splined section. Easiest way out of.jail would be to shorten up an AU ute housing (already leaf sprung) and throw in some cut to length axles. You may be able to fit a 78 lsd to a 75 housing by changing the side bearings. @Valiant might know) but the 75 & and the 78 refer to inches of crown wheel diameter (if I understand correctly) so getting your AU gearset into Karls spare Corty housing might not.be achievable? Quote Link to comment Share on other sites More sharing options...
d.p.n.s Posted April 2, 2018 Author Share Posted April 2, 2018 47 minutes ago, RUNAMUCK said: I might be way off, But I'm 99% sure that the aussie Corty diffs were the BW75 (25 spline) and the AU is a BW78 (28 spline) I'm not even sure if the 78 lsd nugget can be fitted into the 75 housing. The 78 spline is the same as the Ford Nine inch. You can buy cut the length axles which have a long length of splined section. Easiest way out of.jail would be to shorten up an AU ute housing (already leaf sprung) and throw in some cut to length axles. You may be able to fit a 78 lsd to a 75 housing by changing the side bearings. @Valiant might know) but the 75 & and the 78 refer to inches of crown wheel diameter (if I understand correctly) so getting your AU gearset into Karls spare Corty housing might not.be achievable? This could be true mate. And I will find out 1 way or another if the info I've been given is true or not....wouldnt be the 1st time I was wrong. And the mk3 4 and 5 cortinas didn't have leaf springs man.. Quote Link to comment Share on other sites More sharing options...
d.p.n.s Posted April 2, 2018 Author Share Posted April 2, 2018 As per usual guys and girls any info on the 25 / 28 spline diff swaps would be awesome.. Cheers I think worse case I still have Pete's jig for welding diffs nice and straight so I could cut and make something work. Quote Link to comment Share on other sites More sharing options...
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