Quaife seq box and S3 chassis & k series b/housing

[fergus]

Some questions for the PH collective:

1) Can a quaife 60G seq box be fitted straight to an S3 chassis with no other mods?
2) Are any mods recommended to the chassis prior to fitting the box?
3) Is there a bell housing available for the K series for this box (I'm currently using the caterham dry sump/b/housing? Or is there an adapter plate needed?
4) Anyone done a succesful hydraulic CRB conversion on the K?

Anything else I need to know?

Edited by fergus on Monday 14th September 13:49

[martin thomas]

Don't bother. Unless you want oil spewing into your passenger footwell on every trackday.

Martin

[fergus]

martin thomas said:

Don't bother. Unless you want oil spewing into your passenger footwell on every trackday.

Martin

Martin

Did this originate from your gearbox? Sure someone didn't overfill it, as quaife products don't generally tend to have a bad reputation.

[martin thomas]

Fergus

Nearly every r500 has suffered with this problem. I also have a friend that races a ginetta g50 with the same box, He also has had all sorts of grief with his box.
As soon as you start to give them some real hard use they start bleeding. This was just one of many reasons i got shot of my car. It seems that the rear bearing that the prop sits in is not up to the job, It's only half the size of the standard 6 speed item.

martin

Edited by martin thomas on Monday 14th September 20:16

[The Wookie]

Odd, we never had any problems with the Quaife box in the C400's (save the gear indicator screen), in fact it was easily the most reliable part of the car. I heard of one or two selector linkages seizing, but nothing of oil leaks

Does the R500 have a catch tank? Perhaps the road unit is sealed and was generating too much internal pressure

[Chris71]

fergus said:

martin thomas said:

Don't bother. Unless you want oil spewing into your passenger footwell on every trackday.

Martin

Martin

Did this originate from your gearbox? Sure someone didn't overfill it, as quaife products don't generally tend to have a bad reputation.

They do weep a little bit of oil as standard, but spewing is perhaps a tad harsh. Ironically, Fergus, in one of those Race Techs I gave you there's an article on the 60G in a Caterham, so it definitely can go into a K-Series S3 and presumably without any significant modifications.

P36 in April... if you haven't got that one it can be arranged!

[fergus]

Chris71 said:

fergus said:

martin thomas said:

Don't bother. Unless you want oil spewing into your passenger footwell on every trackday.

Martin

Martin

Did this originate from your gearbox? Sure someone didn't overfill it, as quaife products don't generally tend to have a bad reputation.

They do weep a little bit of oil as standard, but spewing is perhaps a tad harsh. Ironically, Fergus, in one of those Race Techs I gave you there's an article on the 60G in a Caterham, so it definitely can go into a K-Series S3 and presumably without any significant modifications.

Chris, I think the gearbox tunnel needs to be swaged to fit the (slightly) wider quaife unit in. Do you happen to know if it mates to the std 6 sp bell housing?

[Chris71]

fergus said:

Chris71 said:

fergus said:

martin thomas said:

Don't bother. Unless you want oil spewing into your passenger footwell on every trackday.

Martin

Martin

Did this originate from your gearbox? Sure someone didn't overfill it, as quaife products don't generally tend to have a bad reputation.

They do weep a little bit of oil as standard, but spewing is perhaps a tad harsh. Ironically, Fergus, in one of those Race Techs I gave you there's an article on the 60G in a Caterham, so it definitely can go into a K-Series S3 and presumably without any significant modifications.

Chris, I think the gearbox tunnel needs to be swaged to fit the (slightly) wider quaife unit in. Do you happen to know if it mates to the std 6 sp bell housing?

Not sure on either count I'm afraid. If the transmission tunnel had been modified on the demonstrator it had been done so subtly - looked like a normal Superlight inside; likewise if you do need a special bellhousing Quaife will probably do them. Might be worth giving them a shout on 01732 741144.

[mic]

The gear box fits the standard chassis but the race chassis need the tunnel stretched slightly. It will fit a K series cateham bellhousing.

[The Wookie]

There was a small chassis modification that had to be made to the C400 for the Sequential upgrade kit. Although I didn't carry it out myself, I was led to believe it was very minor.

[fergus]

mic said:

The gear box fits the standard chassis but the race chassis need the tunnel stretched slightly. It will fit a K series cateham bellhousing.

thanks. Do you know what the difference between the chassis is within the gearbox tunnel? Do you know how it's "stretched"?

[mic]

What do want to know exactly? The tunnel can be stretched, or spread, using a small jack or something similar.The diagonal bars at the front of the tunnel are the one to attack,

[fergus]

mic said:

What do want to know exactly? The tunnel can be stretched, or spread, using a small jack or something similar.The diagonal bars at the front of the tunnel are the one to attack,

Do you know what the increase in the width of the front of the tunnel needs to be?

[mic]

I think its about 15mm, you'll need to spread it more than that as it spings back.

[fergus]

thanks. Do you know whether the front of the quaife box is drilled to accept a mount for an hydraulic CRB?

[mic]

It has a shortened nose, much like the type 9 or six speed. On the Duratec cars the bearing is bolted to the bellhousing.

[fergus]

mic said:

It has a shortened nose, much like the type 9 or six speed. On the Duratec cars the bearing is bolted to the bellhousing.

I'm looking to fit it to a K series engine, and have been told (but not verified yet) that the caterham 6sp bell housing is not drilled for an H-CRB mounting, hence the question whether the gearbox is drilled!

[mic]

Correct, why don't you keep the cable set up.

[fergus]

mic said:

Correct, why don't you keep the cable set up.

1) because it's routed poorly by the boss from the pedal box
2) I've had 3 cables snap on me
3) setting the preload on the cable operated bearing is a pain
4) the std CRB is very poor quality, even when disassembled and lubed properly
5) it gets bloody noisy very quickly
6) an HCRB setup offers a lower pedal effort

[BertBert]

fergus said:

mic said:

Correct, why don't you keep the cable set up.

1) because it's routed poorly by the boss from the pedal box
2) I've had 3 cables snap on me
3) setting the preload on the cable operated bearing is a pain
4) the std CRB is very poor quality, even when disassembled and lubed properly
5) it gets bloody noisy very quickly
6) an HCRB setup offers a lower pedal effort

Carmichael designed and built his own hydraulic release kit Fergus. He may be able to do/get one-offs made. I am sure he has done it before.
Bert