- i5oogt - Posted May 5, 2009 Share Posted May 5, 2009 non of the clutch/pressure plate was touched when the gearbox was removed, another exact gearbox has been put in its place. so it is mighty strange, the only thing added was the sandwich plate as it didnt have one... using a mk3 cortina crossflow floor change box Quote Link to comment Share on other sites More sharing options...
Beaver Posted May 5, 2009 Author Share Posted May 5, 2009 yeh it is quite strange...im sure ill figure it out haha, its prbably just something stuck from sitting for a while. but yeh its definitly not the hydraulic aspect as we used a jack to push the clutch fork all the way back ie into the position where the clutch should be fully disengaged. maybe there was a change in gearbox design between the years....but i doubt it. hopefully have time to have another go at it tonight with a different pressure plate. my mate has a escort box but the starter motor and clutch are on different sides (and doesnt have removable bellhousing) so yeh its not much help....haha Quote Link to comment Share on other sites More sharing options...
Beaver Posted May 5, 2009 Author Share Posted May 5, 2009 also, did u swap it from column shift or was it already floor shift and you just put in another floor shift box? Quote Link to comment Share on other sites More sharing options...
Yowzer Posted May 5, 2009 Share Posted May 5, 2009 Hmmm.I suspect you have the wrong pressure plate or the wrong sized pilot bearing in the crankshaft for the gearbox input shaft nose. Does the pressure plate have a thick steel ring on the end of the diahgram fingers? The ring I am talking about is what the release bearing should run on. Have you still got the Hunter? A Hutner pressure plate will bolt straight onto the Cortina flywheel and is a fantastic upgrade if you have more than standard HP. I have put close to 160hp through the Hunter units i think im getting confused as to what the pressure plate is...i thought the pressure plate sat against the flywheel, and the the clutch cover over that (clutch cover has the fingers) and the the release bearing comes in contact with the fingers of the clutch cover??? or am i confusing my self? any nah i dont have the hunter anymore... Don't really know what would be going on, maybe the wrong bearing? if it's not wide enough it may not be fully disengaging the clutch. Very unlikely though. Quote Link to comment Share on other sites More sharing options...
Beaver Posted May 5, 2009 Author Share Posted May 5, 2009 ahh i was confusing the part names. thanks for the picture!! i like pictures haha. yeh im stumped... Quote Link to comment Share on other sites More sharing options...
Unclejake Posted May 5, 2009 Share Posted May 5, 2009 ":1k4nzsgs]non of the clutch/pressure plate was touched when the gearbox was removed, another exact gearbox has been put in its place. so it is mighty strange, the only thing added was the sandwich plate as it didnt have one... using a mk3 cortina crossflow floor change boxGiven you advise crossflow I will assume the gearbox is 1600cc spec and has a removeable bellhousing.I also assume that the real wheels are being driven when the engine is run despite what position the clutch pedal is at. Please advise how you have come to this conclusion (i.e. have you got the driveshaft hooked up or are you just going by the feel of the mainshaft?) Do you have the old gearbox handy? If so: 1) Check the length and diameter of the input shaft of the old vs. new gearbox. You need to pay attention to the smooth bit of the input shaft. The bit that is not splined and slips into the pilot bearing that is inside the crankshaft as they differ between models. 2) Check the bellhousing depths between the two gearboxes. 3) Ensure you are using the release bearing and fork that worked last time. There are several different ones. The best possible thing you could do is to take a bunch of photos when the box is off the car. If the gearbox input shaft is the culrpit you will fuck the engine pretty damned quick (run the thrust bearings which can heat and can bend the crank). Quote Link to comment Share on other sites More sharing options...
Beaver Posted May 5, 2009 Author Share Posted May 5, 2009 i shall look into what u have suggested UJ, cheers. i need to confirm with i500gt (who i got the car off) which gearbox was in before he swapped them. Quote Link to comment Share on other sites More sharing options...
Beaver Posted May 5, 2009 Author Share Posted May 5, 2009 ":86n3t62s]non of the clutch/pressure plate was touched when the gearbox was removed, another exact gearbox has been put in its place. so it is mighty strange, the only thing added was the sandwich plate as it didnt have one... using a mk3 cortina crossflow floor change boxGiven you advise crossflow I will assume the gearbox is 1600cc spec and has a removeable bellhousing.I also assume that the real wheels are being driven when the engine is run despite what position the clutch pedal is at. Please advise how you have come to this conclusion (i.e. have you got the driveshaft hooked up or are you just going by the feel of the mainshaft?) yes it has the removable bellhousing. we had the back wheels just off the ground and had the driveshaft hooked up, and yes the wheels moved even in neutral. i500gt is going to try get hold of the old gbox xo i can compare input shafts Quote Link to comment Share on other sites More sharing options...
Unclejake Posted May 5, 2009 Share Posted May 5, 2009 we had the back wheels just off the ground and had the driveshaft hooked up, and yes the wheels moved even in neutral Then it isn't the clutch (unless you could hold the wheels stationary by hand in which case the test is invalid).Get those wheels on the ground and be certain you have not diagnosed a problem that does not exist Quote Link to comment Share on other sites More sharing options...
Beaver Posted May 5, 2009 Author Share Posted May 5, 2009 im prety certain i remember stopping the wheels by hand when it was in neutral....but again i shal check Quote Link to comment Share on other sites More sharing options...
treggo Posted May 5, 2009 Share Posted May 5, 2009 If you can stop the wheels when jacked in neutral its normal brother. Quote Link to comment Share on other sites More sharing options...
Beaver Posted May 5, 2009 Author Share Posted May 5, 2009 If you can stop the wheels when jacked in neutral its normal brother. yeh man Quote Link to comment Share on other sites More sharing options...
Unclejake Posted May 5, 2009 Share Posted May 5, 2009 If you can stop the wheels when jacked in neutral its normal brother. yeh man Pretty much the same with the clutch dude. Get the wheels on terra firma. You might have nothing to worry about Quote Link to comment Share on other sites More sharing options...
Beaver Posted May 5, 2009 Author Share Posted May 5, 2009 yeh i see your point but we have had it on the ground, and when u start it in nuetral and then try go into gear it just wont go, only reverse with a hefty crunch Quote Link to comment Share on other sites More sharing options...
Unclejake Posted May 5, 2009 Share Posted May 5, 2009 Understood. Quote Link to comment Share on other sites More sharing options...
ProZac Posted May 5, 2009 Share Posted May 5, 2009 What does it do if you try to start it in gear, with your foot on the clutch? Quote Link to comment Share on other sites More sharing options...
Beaver Posted May 5, 2009 Author Share Posted May 5, 2009 i think it just lurched foward and stalled as if u just has it in gear without the clutch in. didnt really bother trying as i know the clutch obviously wasnt working. have tracked down the old gbox so will compare input shafts when i get the chance Quote Link to comment Share on other sites More sharing options...
sentra Posted May 6, 2009 Share Posted May 6, 2009 i only skim read this but i noticed u thought u had hydraluics problems and used a jack to move the fork which is fine just know if you push it to far it will re-engage Quote Link to comment Share on other sites More sharing options...
Beaver Posted May 6, 2009 Author Share Posted May 6, 2009 hmmm thats interesting.... took the gbox out again...compared input shaft lengths with another mk2 cortina box, turns out it was 15mm too long.....so we "modified" it to the same length (well close enough) put everything back together....still didnt work.... guna have a feed and try some more shit Quote Link to comment Share on other sites More sharing options...
Unclejake Posted May 6, 2009 Share Posted May 6, 2009 I wish I was in your shed/ nah probably too cold (it is 8 degress in mine so yours must be worse). Please check the pilot bearing hole in the crankshaft with a torch if you have not already................. and some photos might help this cause if you get a chance Quote Link to comment Share on other sites More sharing options...
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