Gearbox Gods

[Neofox]

Evening peeps.

Well the old short ratio gearbox on my Type-RA is starting to drive me nuts.

Having quite a few crunch moments especially when cold. I think synchros are worn.

Also when backing off the throttle the gearbox is making a wee whining noise in any gear.

Options:

1. Get the gearbox out and rebuild it. If so any recommendations and anyone got any ideas on a rough cost?

2. Thinking about a 6-Speed. Who would be the best person to ask about doing this? Rough cost?

Cheers

Ian

[sma01]

You should try contacting teg sport mate, you not fancy a dog box??

 

scott

[Neofox]

Wouldnt say no but i've heard the cost are very high.

[sma01]

it aint cheap mate, think its a few £k anyway, would be superb though, its the modena gears they use, will be going for that on mine when the car goes to the next stage i think.....

 

scott

[Neofox]

Hmmm from £4.5K i can think of better ways to invest that kind of money at the moment.

Wuz told me some details on using the JDM 6-Speed just trying to get the full low down on whats all needed and costs.

[james_mowbray]

I will be joining you shortly on the quest for, probably a re-con RA box... Its starting to show wear now but lets see how long it holds out.....

 

 

 

James

[Neofox]

I was told API were supposed to be pretty good, anyone heard of them?

[wilky]

Okay lets get a few things straight here because I dont think people realise what an absolute nightmare a straight cut box is.

If you want to do clutchless changes all the time and are prepared to pay for it, put up with the deafening whine and tempremental behaviour at low speed then straight cut is the answer, having driven one its a nightmare and horrible.

I had the funds to go for S/C and decided against it yes I have an uprated gearbox all internals by hewland, billeted selector rods etc etc, but I could not justify the aggro and f**kin noise the thing makes.

If you want to ask advice of a man who regularly does these boxes for rally cars and road cars speak to Bill at Greersport,

realistic chat, realistic prices.

Some people like  straight cut first couple of gears then mix and match as they go up the box. I suggest you drive a car with a s/c box before you buy one.

Callum W

[tino]

6 speed, 1-1.5k last time I looked (second hand). Plus you will need a shorter propshaft. The new Sti or the one off an automatic I think is correct. Also when I did mine I was recomended to use a group n gearbox mount as the box is a tighter fit (ooh eerr missus) and this stops it touching the transmission tunnel. Got the mount from Harvey. I think the JDM box has slightly lower ratios in 5th and 6th too if its acceleration your after.

If you get it try and get one with gear linkage as these are about £200 if I remember. Also check to see if it has the front stub shafts. Not too dear or hard to get but one less thing to worry about.

TTFN

[paul_honthy]

Got to agree with Wilky.My synchro's shot and going to get sorted at Greers.IMHO they are the only peolpe that i would trust with my car and their costs are spot on.As Wilky said

realistic chat,realist price

their experiences and knowledge is worth every penny.

[johnnyr6]

I also agree with wilky. Talk to bill, if your happy with the ra's ratios then get your box rebuilt, prob cheaper than a 6spd and you know it'll be good and have warranty. If you want better motorway cruising get either 6spd or uk box, you'll need the rear diffs to match with either.

 

For my money.. Greersport is the way to go.

[Neofox]

Anyone know of any garages in the lower half of scotland that do the 6-speed conversion?

Got some more questions too. []

Diff's whats up with all the 4.44 etc what does it mean what are the differences?

If i was to put in a JDM 6 speed to match my Type-RA rear diff what else would need replaced?

Also what kind of increase in top speed would i expect and is the gearing similar through 1-5 to my Close Ratio one?

Sorry for all the questions i just trying to get to grips with it all and figure out whats the best way to spend my hard earned cash []

P.S Gordy i havent forgotten about that money, i'll give you a buzz soon and arrange to drop by. Hows the motor coming along?

Cheers guys

Ian

[tino]

If you fit a JDM 6 speed you will need a 3.9-1 rear diff to match the front. JDM drop gear is 1-1

If you fit a UK 6 speed you will need a 3.54-1 rear diff as UK box has 1.1-1 drop gear.

Both boxes have 3.9-1 front diffs but differing drop gears

The 'drop gear' is  a pair of gears in the rear of the box that transmit the power from the gearbox driven shaft to the output shaft that the rear prop is connected to. They are different to compensate for the two types of rear diff used.

To be honest it may well be cheaper and easier to have your old box reconditioned or even uprated by the chaps recommended in previous posts.

[fai17]

GREERSPORT ALL THE WAY M8

[JohnSt]

Callum, not meaning to be pedantic....but I suppose I am []

 

Okay lets get a few things straight here because I dont think people realise what an absolute nightmare a straight cut box is.(Lets at least get the terms right)

f you want to do clutchless changes all the time and are prepared to pay for it, put up with the deafening whine and tempremental behaviour at low speed then straight cut is the answer, having driven one its a nightmare and horrible.(A straight cut gear set has nothing to do with clutchless changes, thats what dog engagement allows you to do, these are mutually exclusive, you could buy a straight cut syncro box)

For what it's worth, don't even think of a dog box for a road car. If you can tolerate the noise, a straight cut gear set is what you want for strength... IF you can tolerate the noise.

 

I had the funds to go for S/C and decided against it yes I have an uprated gearbox all internals by hewland, billeted selector rods etc etc, but I could not justify the aggro and f**kin noise the thing makes.

If you want to ask advice of a man who regularly does these boxes for rally cars and road cars speak to Bill at Greersport,

realistic chat, realistic prices.

Some people like  straight cut first couple of gears then mix and match as they go up the box. I suggest you drive a car with a s/c box before you buy one.

Callum W

[wilky]

Thank you very much John Ill ensure to get my terminology correct in the future.

I was refering to dog engagement but was using the lay terminology so often confused by us mere mortals.

My new gearbox is straight cut synchro, I just didnt want to confuse the issue and keep it simple.

Im sorry that you felt that I was steppimng out of my box, or talking about something I know nothing about. This is a subject I have only recently studied and started to understand.

Callum W

 

[JohnSt]

That's all right, buy me a lager and we'll say no more about it []

 

I gather you should be getting it touch with me on another subject.... RB memorial, rally to spectate at , venue to camp at posssibly were all possible theory's [H]

 

P.S. I work in Networking... learn some acronyms, that realy Fecks people up... they have to pretend to know what you're on about [6]

 

Edited to add the overcomplicated smileys

[Neofox]

Well looks like i'm gonna phone Greersport. If anyone else has any suggestions or comments i'd really appreciatte hearing them, i dont want to waste £1000.

As a matter of interest if i was looking for a setup whereby i would like to build a gearbox that is strong for trackdays and capable of around 400bhp what would your suggestions be?

Thanks alot

Ian

[fai17]

  Quote

Well looks like i'm gonna phone Greersport. If anyone else has any suggestions or comments i'd really appreciatte hearing them, i dont want to waste £1000.

As a matter of interest if i was looking for a setup whereby i would like to build a gearbox that is strong for trackdays and capable of around 400bhp what would your suggestions be?

Thanks alot

Ian

 

I tell Bill you are going to be calling...[]