mordantly Posted December 29, 2016 Share Posted December 29, 2016 A little slow to start my thread. Bought a 1983 VF750F. No title for the 83 frame. Have title and bits swapped into 1985 VF700F frame. Engine has custom ground cams Yoshimura "muffler" Custom? 4-1 headers Aftermarket ignition.. Unknown rev limit status CBR 17s unknown year Aria pistons.. Unknown bore, dispacement, comp ratio One or two track days in early 2000 on race built motor Dyno chart.. 126HP Stainless brakes lines Spare stock 1983 VF750F engine I have converted to all balls tapered New fork seals/paint 3 caliper piston rebuilds SS hardware for forks axles, rotors, rear sprocket and rotor TrailTech Vapor gauge cluster Link to comment Share on other sites More sharing options...
mordantly Posted December 29, 2016 Author Share Posted December 29, 2016 Bought her 21 April 2016. The Yoshi is only a cone completely open with those stamped areas for minimal back pressure. It is VERY loud. The test ride with only a tach, hit approx 120mph according to neighbor bike speedo. Front piston dragged severely but not known at that time. Definitely has 100+ hp. Not that it can touch my 2002 ZX9R's 144HP, but impressive! Link to comment Share on other sites More sharing options...
mordantly Posted December 29, 2016 Author Share Posted December 29, 2016 Raash? Rear sets with cheesey pegs Unknown aftermarket rear shock and spring Unknown German clip ons Race type Heim shifter Link to comment Share on other sites More sharing options...
SEBSPEED Posted December 29, 2016 Share Posted December 29, 2016 Let's see that dyno sheet. The stamped baffles are the baffles, it's how they were made back then. Link to comment Share on other sites More sharing options...
mordantly Posted December 29, 2016 Author Share Posted December 29, 2016 Ye ask, ye shall receive... Link to comment Share on other sites More sharing options...
mordantly Posted December 30, 2016 Author Share Posted December 30, 2016 During operation thermostat and radiator hoses I have discovered the fact that the lower radiator is right on top of the oil filter. I am not going to remove the radiator every 6 weeks to change the filter. Hmmm. Link to comment Share on other sites More sharing options...
Alaskan Posted December 30, 2016 Share Posted December 30, 2016 You don't have to remove the lower radiator - just remove the mounting bolts and let it hang while you get at the filter. No problem. I still remember my 1984 VF750F. It had a ton of little issues that drove me to distraction. For example, the manual says that you have to split the cases to replace a leaky clutch pushrod seal. WRONG! And that awful pneumatic shock. Ugh! BUT there are relatively inexpensive fixes and expedient work-arounds for a lot of the issues. I may even have some parts lying around. Enjoy!. EDIT: I see yours doesn't have the stock shock. Good. Link to comment Share on other sites More sharing options...
mordantly Posted December 30, 2016 Author Share Posted December 30, 2016 At 500 to 700 miles per week, I rack up oil changes fast. Cars go up to 5k on oil. All my motorcycles get oil and filter close to 3k as practical.. I see what you mean about the bracket. Mine has 3 on the upper and one on lower 4 in fans so it is more fiddly. Probably delete the lower. Link to comment Share on other sites More sharing options...
mordantly Posted December 30, 2016 Author Share Posted December 30, 2016 In the 8 months since I took the front calipers off for rebuild, I have lost or incorrectly installed the left TRAC arm. See the bushing in the caliper bolt is longer than the bushing in the TRAC hole of fork. Both bolts bottomed out with link still floppy in addition to not parallel. Anybody have a clear photo of the link? Link to comment Share on other sites More sharing options...
TheDutchy Posted December 31, 2016 Share Posted December 31, 2016 The plate/arm is in the wrong way around.. The plate (as in original) has an off-set.. Link to comment Share on other sites More sharing options...
mordantly Posted January 3, 2017 Author Share Posted January 3, 2017 It appears I need the flanged and longer bushing in the fork leg. Flange to caliper or out? Link to comment Share on other sites More sharing options...
TheDutchy Posted January 3, 2017 Share Posted January 3, 2017 Could also be that the axle is in from the wrong side... Axle, according the schematics goes in from the speedo side.. Nut/bushing should be on the right side of the bike.. Checked that ?? My VF is currently in storage. Could check and shoot some pics later this week.. I zoomed in on one of the pics. and this came out... Link to comment Share on other sites More sharing options...
mordantly Posted January 5, 2017 Author Share Posted January 5, 2017 Although unknown cbr 17s with rotors and sprocket, stock front axle and brakes. Am following fsm for axle torque. Assured axle installed correctly. Right leg is torqued. Left TRAC leg controls width vs caliper mount to rotor clearance. Flange appears to go towards rotor. What are the other two items marked? Switched bushings and bolts torque down correctly now. Link to comment Share on other sites More sharing options...
Member Contributer Captain 80s Posted January 5, 2017 Member Contributer Share Posted January 5, 2017 Looks like a Dymag front wheel and a CBR 600/900 rear wheel. Raask rearsets. Fox Twin Clicker shock. Telefix Cipons Very cool bike. Link to comment Share on other sites More sharing options...
mordantly Posted January 5, 2017 Author Share Posted January 5, 2017 Trendy track bike parts or awesome parts? Link to comment Share on other sites More sharing options...
Member Contributer Captain 80s Posted January 5, 2017 Member Contributer Share Posted January 5, 2017 Awesome parts (Except for those stupid pegs... always hated that style) Link to comment Share on other sites More sharing options...
mordantly Posted January 5, 2017 Author Share Posted January 5, 2017 Thanks for again being the guy with the answers! I am not too fond of them either. Will move to back and get more motocross style with some bite. Link to comment Share on other sites More sharing options...
Member Contributer FromMaine Posted January 9, 2017 Member Contributer Share Posted January 9, 2017 Could you have a look to see if the front rim is in fact from a CBR? I would be very interested in some pics of your front end if it is. Thanks Link to comment Share on other sites More sharing options...
mordantly Posted January 10, 2017 Author Share Posted January 10, 2017 Front is 3 distinct spokes and deep offset wheel bearings. The braking rotors and rear sprocket part numbers all turned up nothing when searching. Apparantly all items discontinued... Or numbers stamped have to cross to something. All calipers and mounts are stock 1983 VF issue. Link to comment Share on other sites More sharing options...
Member Contributer FromMaine Posted January 12, 2017 Member Contributer Share Posted January 12, 2017 Thanks for the pics. The front rim, as Captain 80's noted, does appear to be a Dymag, lucky you! I'll start to look at CBR front rims to see what would work best. You have a very interesting 83 Vf750F. I 'll look forward to further posts. Link to comment Share on other sites More sharing options...
mordantly Posted January 12, 2017 Author Share Posted January 12, 2017 Thank you! I looked at Dymag and it seems similar to CH3, but does not say Dymag. To test if aluminum or magnesium should tell me more. Link to comment Share on other sites More sharing options...
mordantly Posted March 28, 2017 Author Share Posted March 28, 2017 Just got my order of all rubber boots for calipers, all water hard line seals, diaphragms and msc screws. Link to comment Share on other sites More sharing options...
mordantly Posted June 5, 2017 Author Share Posted June 5, 2017 Front calipers fully rebuilt.. Broke the anti-dive bolt before 27 ft-lb could be attained. Now a helicoil is required to fix. Had visions of bleeding brakes and filling forks with oil and front end would be done. Ugh. Replaced all rubber in coolant hard lines but only ordered 1 of the orings for the covers under carbs. New coolant hoses, with in-line sender for my trail tech in upper hose. Thermostat housing was corroded so ordered a great condition used one plus tail lense with harness and complete harness. My wiring harness had the wires for tail light cut out at least a foot back. Cleaning and inspecting the harness presently. Link to comment Share on other sites More sharing options...
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