GregT Posted August 9, 2022 Share Posted August 9, 2022 Not something as simple as a damper on the throttle body is it ? At one point a lot of cars were coming with a damper on the linkage to slow the rev drop when you lifted off. Quote Link to comment Share on other sites More sharing options...
kpr Posted August 9, 2022 Author Share Posted August 9, 2022 Nar nothing like that on this engine. the throttles are cracked open for idle speed. which is a little more than usual due to cams. I could probably run an isc and shut the throttles completely. make sure the isc is locked out at high rpm. but rather avoid any extra stuff on this setup. also seems to be more something that happened to the box or engine thats in it atm. as wasn't as bad on the other engine. i dont recall having issues changing at 9k before, now about 7k is best it will do without waiting for revs to drop wayyy back. Quote Link to comment Share on other sites More sharing options...
Popular Post cletus Posted August 10, 2022 Popular Post Share Posted August 10, 2022 *ducks and runs away to avoid being hit by a 4age camshaft* 2 8 1 Quote Link to comment Share on other sites More sharing options...
Muncie Posted August 10, 2022 Share Posted August 10, 2022 Relevant but probably useless, I worked with a guy who had a rather mad honda jazz running a combo of bits that included a honda motorcycle gearset (allegedly) for the above reasons. Seeing as your doing bike revs dig into that knowledge stream online might be useful info there you could adapt. Or fit a DCT box or something...... all the cool kids are apparently. http://speed.academy/dct-conversion-honda-s2000/ Quote Link to comment Share on other sites More sharing options...
Roman Posted August 11, 2022 Share Posted August 11, 2022 On 10/08/2022 at 13:21, cletus said: *ducks and runs away to avoid being hit by a 4age camshaft* if you've seen how he can stuff these cams in through an oil cap, you'll know that you're in real trouble 2 1 Quote Link to comment Share on other sites More sharing options...
Popular Post kpr Posted April 13 Author Popular Post Share Posted April 13 Some years later, seems i have a solution. if it doesn't break; I ended up making the gearbox better replacing a lot of parts, but was never amazing at high rpm. had to shift pretty slow so didn't grind. recently tried some thinner mt-lv redline oil, in an attempt to get the syncro's to grip some more. Yeah it made it worse over the castrol vmx. After sifting through the internet and finding not much other than the old grind some teeth off the synchro. Found a comment saying something along the lines of; "putting double springs in the selector may help with high rpm changes" The spring being what red arrow is pointing at below. Yeah you cant put 2 in there, but some have a coil spring the sits in the middle of the hub so maybe that's what they meant. After looking how it actually works, rather than just replacing parts. The spring presses up against the little keys in green. they have a raised section that sits in a recess in the selector hub(outer part) Now when you go to change gears the selector hub pushes the 3 keys up against synchro ring, which pushes the synchro ring onto the cone, slowing the gearbox down. Until you put enough pressure on the shifter/selector hub, the selector hub cams over the keys and selects the gear. So having a stronger spring on the keys will put more force on the synchro ring before it trys to select the gear. which means it should slow the gearbox down more before it tries to change gears, cool. Will it work who knows. sifting though my pile of gearbox parts I found some bearing retainer spring clips that would work for 1/2 gears. 3rd/4th found some that would work out of some hilux front hubs I dont have any pictures of what it looked like once i modified it them. but ground them down to similar shape as the factor ones as above, just thicker, so more spring pressure. I ground a few teeth off some of the synchro rings also, but i dont this would have changed things much. All this went into my spare t50, with the best selection of 2nd hand junk i could find. So worse base than the one in the car. Result. It amazingly works, can throw it through the gears at 10k easy, haven't been super rough with it yet, but changing pretty fast no crunches, changes nice. only side effect, is its a bit more notchy selecting gears, but not terrible at all. I even used the same oil that come out of the gearbox in the car, for a fair test. 14 1 Quote Link to comment Share on other sites More sharing options...
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