boldy205 74 Posted June 15, 2008 Hi, i have totaly and utterly smashed my std Mi16 engine to bis, so need a new engine!! I was looking at the 2088cc topic, and read it with great intrest, untill it turned into a giant slaging match, then back into a subject involving engines, but nothing to realy do with the whole iron block/alloy head/alloy crank setup. I would like to know what people have done with this setup, there outcomes and whats actually needed to make this engine. Can the cylinder head be left standard, or des the combustion chamber need modding to suit the wider iron block bore? Which pistons/rods/bearings etc to use. Thanks for your time, Matt Share this post Link to post Share on other sites
pug_ham 241 3 Cars Posted June 15, 2008 I can't answer all of your questions but with regards to the pistons & rods, you have to use the 86mm pistons in the iron block & the rods fitted are likely to be best suited to the swap. When I was thinking of building a 2044cc 8v XU10 (86 x 88) I had the head checked over by QEP & AFAIK the head was just skimmed to check it was level, smooth & up the CR a little before rebuild but I changed my plans before this engine was ever built. I think the best head to use on an XU10 16v engine will be the XU10 16v head rather than messing around using the XU9 Mi head. IIRC the best bearings to use the Mi 88mm crank in an XU10 block are those from a diesel XUD9. Graham. Share this post Link to post Share on other sites
petert 554 Posted June 16, 2008 (edited) The XU9J4 and XU10J4 heads are identical in terms of valve sizes, port size, chamber shape/volume etc. The only significant differences are the number of exhaust studs, counter bore depth for head bolt over the water pump, oil drain back hole (near water outlet) and the location studs for the inlet manifold. There is no issue using the XU9J4 head on the XU10J4 block providing you use nine regular M12 XU10J4 head bolts and one XU9 diesel head bolt over the water pump. The head diameter of the XU9D bolt needs to be turned down a bit so it fits in the hole. QEP may even sell you one bolt, or a boxed solution ready to go. Mains bearings - you must use XU10J4 (the tang location differs) Rod bearings - XU9J2, XU9J4 or XU10J4 (they're all the same size, XU9J4 are copper backed) Use XU10J4 rods and pistons. If using after market cams you'll need to check valve to piston clearance as the extra stroke decreases the clearance. Anything up to 0.075" lift at TDC is fine, but after that you're heading for trouble. You will need to cut the piston reliefs deeper. Edited June 16, 2008 by petert Share this post Link to post Share on other sites
boldy205 74 Posted June 16, 2008 Wow!! thanks for those replies. Perert is the xu10j4 head the late (Cat) Mi16? I am tempted to go Gti6 but dont like how tight it fits to the master cylinder. Share this post Link to post Share on other sites
huckleberry 0 Posted June 17, 2008 XU10J4 = S16 XU10J4RS = GTI6 The mi16s were the XU9 series being either J2 or J4 on 8 or 16 valves. Share this post Link to post Share on other sites
James_m 0 Posted June 17, 2008 Wow!! thanks for those replies. Perert is the xu10j4 head the late (Cat) Mi16? I am tempted to go Gti6 but dont like how tight it fits to the master cylinder. You will have the same master cylinder problem on anything iron blocked as the issue is that the block itself is slightly taller. Share this post Link to post Share on other sites
VisaGTi16v 1 Posted June 17, 2008 One plus point of my Visa, they left it on the near side for the uk market and ran a pedal bar so no clearance issues Share this post Link to post Share on other sites
boldy205 74 Posted June 17, 2008 Ah the blocks taller, i see. Im thinking poss move the M/C Has anyone done this? VisaGti16v: i dont want to know!! (Or do i want to buy a visa?) Share this post Link to post Share on other sites
VisaGTi16v 1 Posted June 17, 2008 Have a search as I believe there are a few simple options for this problem on 205's ( ) , top mount off a certain ZX iirc amongst others which are not as tall and so give a bit more clearance Share this post Link to post Share on other sites
boldy205 74 Posted June 18, 2008 Henry1.9gti: How woll that help? Not sure what you mean? I have looked at previous topics, looks like a RS2000 mount can be used. Though im not sure how it fits to the 205/which mount it is ie, Mk1/2/5 etc?? Anyone? Share this post Link to post Share on other sites
pug_ham 241 3 Cars Posted June 20, 2008 A pedal box does away with the standard servo & mc just using two seperate cylinders, one front one rear & normally different sizes. Gives you lots more clearance but generally heavy brakes which take a bit of getting used to after driving servo assisted brakes. Graham. Share this post Link to post Share on other sites
boldy205 74 Posted June 20, 2008 ah i see! thanks Pugtorque. How about these escort engine mounts then? Whats the crack with these? Anyone know? Share this post Link to post Share on other sites
jackherer 543 Posted June 20, 2008 Look for p/n FP292 on the Burton site. I got one but I'm not sure about it TBH, they're pretty cheap and nasty and as they aren't a perfect fit you need to space it with washers which I think will give the engine more leverage against the mount making it effectively softer. Share this post Link to post Share on other sites
boldy205 74 Posted June 21, 2008 ok thanks, will investigate!! Share this post Link to post Share on other sites
