Crunchy feel


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babyface

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Apr 23, 2007
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i have recently had my my 3rd and 4th syncros done in my gearbox as it was crunching going from 2nd to 3rd. its been 1200 miles and the crunching seems to be coming bk. the 3rd and 4th were v stiff at first, now loosened up a little bit. i have been driving very slowly since the rebuild.
does anyone know what may be the problem?

also, i had the clutch, release bearing and flywheel, pilot bearing changed

thanks in advance
 
did you also change the sleeves? there is more to trany grinds than just synchros. what fluid did you use?
 
had it done at a garage m8, they checked the gearbox and only found noticable wear in the syncros... gearbox fluid... i will answer that when i find the receipt m8. will reply soon
 
... so, the reciept foes not say the fluid tyep...

anyway, my gearbox is now starting to crunch again.
i had the clutch, flywheel, pilot and release bearing changed. also, the snycros.
the car was done during November and my car was garaged tiil january...
what could it be?
the garage said it could be the fluid?"! how often am i suppose to change the tranny gearbox
any help much appreciated
 
Have u checked all your linkages/ bush's
you should not need to change your aft 1200 mile's but they may have just put any fluid in there! i would change your fluid mate and see from there!
 
Don't use anything but Honda MTF. Wrong gear oil is the #1 killer of trannies after dodgy installation
 
MFactory said:
Don't use anything but Honda MTF. Wrong gear oil is the #1 killer of trannies after dodgy installation
Click to expand...

im gonna have to disagree on this one man, after missing 3rd gear and going back into 1st at 60mph my tranny developed a horrible whining noise when cruising (bad countershaft bearing?) and pennzoil synchromesh took the noise away and fixed my 2nd to 3rd gear grind :nice: i really swear by that stuff now :clap:
 
Yeah, you do get some good reviews of some aftermarket oils, I admit, but you also get a lot of negative reviews :( A lot of it also depends on the LSD you are using.

Generally speaking though, Honda MTF is usually the one to use as the oem parts & bearings were not designed to be used with a lot of the aftermarket oils. Its like drinking beer vs water. Beer may be perfectly drinkable and help get you through a bad spot, but your body certainly doesn't appreciate it :)
 
MFactory said:
Yeah, you do get some good reviews of some aftermarket oils, I admit, but you also get a lot of negative reviews :( A lot of it also depends on the LSD you are using.
Click to expand...
What you say here mate reflects the truth.......positive and negative reviews are just the wrong way to go when making plans for mods......A positive review most probably reflects a perfect tuning with aftermarket parts from a true proffessional, whereas a negative review reflects a crappy tunning from a crappy "proffessional" and where the parts are blaimed for failures........Tuning a fast/reliable car is not the easiest job in the world, unfortunately, there are too many so called "proffessionals" out there, who take all kinds of risks and know **** about tuning, but when the car starts spitting out black smoke and then the engine gets dead, they say: "That's the case with mods" :blabla:
OEM parts aren't more reliable than aftermarket(top brands). Is because factory tuning is perfect and failures are rare. Now what's the difficulty in throwing in two cams, a set of valvesprings and retainers, a throttle body, and an ECU?? Anyone can do it within a month's lecture.
And btw, top notch companies spend loads of millions of dollars each for research before putting new parts into production.
Isn't the case with MFactory as well? :nerv:
 
Yes, you are correct. Even the highest quality part can fail due to install error. This doesn't mean the part is bad quality, but in most cases, the customer or the tuner always blames the manufacturer without stopping to think "why" the part might have failed.

Regarding R&D, I wouldn't say millions, but it does take a lot of funding, yes. A good example is our new Pro series gear sets. Before we can even make the first test set, we have to spend 5 figures just for the tooling :(
 
MFactory said:
Yes, you are correct. Even the highest quality part can fail due to install error. This doesn't mean the part is bad quality, but in most cases, the customer or the tuner always blames the manufacturer without stopping to think "why" the part might have failed.

Regarding R&D, I wouldn't say millions, but it does take a lot of funding, yes. A good example is our new Pro series gear sets. Before we can even make the first test set, we have to spend 5 figures just for the tooling :(
Click to expand...
And since you refer to digit-figures, what about the final cost estimation? Will it reach....hmmm let say 6-digit or even 6 and a half?? :lol:
 
Well, after the tooling, then there is material costs (which will vary), then machine costs, treatment costs, finishing costs. And thats just for the initial test set.

then we have to physically test them till they break on various vehicles. If satisfactory, we can produce more. If not, then its back to development again.

so yeah, it can reach 6 digits depending on the product.
 
ok.... so ive called the garage and they said that i shift too fast o_O and that i may have damaged the gearbox whilst bedding it in...
now im going to go back to them as the labour is free etc... what i want to know is, what parts normally need replacing when having trouble with shifting into 3rd gear.
thanks
 
Shame you have to use that garage again, they dont sound very good. Bedding it in and shifting too fast sound like excuses for them.
 
exactly m8! i spoke to tom today and if it wasnt because of the fire, i would of got it done there :( do you mind me asking how much it was from tgm, and if you could tell me the stuff replaced please. not the aftermarket stuff, just the box components. pm me if you like

thanks
 
ok, so i called the garage and they said that they would look at it. they said that it could be due to bad shifting , and not bedding it in properley which may have caused the syncro to not wear in. oh yeh, and shifting speed is too quick for the gearbox...
problem is, that i have to take the box out of the car, and deliver it them in person so that they can describe to me what is wrong with it. parts i will still have to pay for.
i dont know what to do now, as they are based quite far away

can anyone tell me the normal parts that are required when there is a problem when shifting into 3rd gear at high rpm.
many thanks
 
Tgm opoened it up and the 3rd syncro is damaged again :(... this time tom is going to replac the syncro and the slector fork.

could somebody please tell me what procedures they do after the rebuild
? ive only had the car back since november. could it be because the selector fork wasnt replaced first time that caused the new syncro to damage
 
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