Supercharger grind/rattle

[ARAF]

007 VXR said:

Roger did fix it and yes, its on dreamtoys car now with no issues since.

So can we assume that "the only answer is to swap to a TVS 2300" is man-maths?

[Xpuffin]

007 VXR said:

Roger did fix it and yes, its on dreamtoys car now with no issue.

IIRC Roger replaced the blower deck on both our units prior to resale.
The problem is the design of the middle bearing journal, the whip of the shaft can cause the bearing to spin, once it starts the alloy being the weak link starts to wear away at the journal making the repair interval ever smaller.
The 112 has no centre bearing, it was a new design for the 122.

[MyM8V8]

GaryNoGrip said:

Xpuffin said:

Common problem with the 122s.
As long as you are careful it won't stop you using it. Fixing won't really be cost effective, wait till you can upgrade to a tvs1900

How much is a tvs1900 going to cost compared to fixing the 122 then?

Why would you want to replace a 2.2 litre blower with a 1.9 litre blower? For the difference in cost you might as well go 2.3? (TVS2300)

[Xpuffin]

MyM8V8 said:

GaryNoGrip said:

Xpuffin said:

Common problem with the 122s.
As long as you are careful it won't stop you using it. Fixing won't really be cost effective, wait till you can upgrade to a tvs1900

How much is a tvs1900 going to cost compared to fixing the 122 then?

Why would you want to replace a 2.2 litre blower with a 1.9 litre blower? For the difference in cost you might as well go 2.3? (TVS2300)

Having watched Trevor's car run a SRR the way the 1900 picks up is just mad. Real world I'm betting it would drive quicker. Also its a cheaper option.

[ARAF]

Xpuffin said:

Having watched Trevor's car run a SRR the way the 1900 picks up is just mad. Real world I'm betting it would drive quicker. Also its a cheaper option.

Bit like the old 112s, from what I've been led to believe. No headline figure, but a hoot to drive.

Reminds me of the difference between a 1/4 litre 2 stroke, and a 4T sports bike with similar power.

[V8TFT]

Xpuffin said:

MyM8V8 said:

GaryNoGrip said:

Xpuffin said:

Common problem with the 122s.
As long as you are careful it won't stop you using it. Fixing won't really be cost effective, wait till you can upgrade to a tvs1900

How much is a tvs1900 going to cost compared to fixing the 122 then?

Why would you want to replace a 2.2 litre blower with a 1.9 litre blower? For the difference in cost you might as well go 2.3? (TVS2300)

Having watched Trevor's car run a SRR the way the 1900 picks up is just mad. Real world I'm betting it would drive quicker. Also its a cheaper option.

Not sure about cheaper, but definitely entertaining to drive in this weather.

[GaryNoGrip]

Took the car for a good run tonight and despite wet roads managed to get enough grip to get the supercharger working well (still smiling), noise has not returned, fingers crossed it doesn't!

[ArnieVXR]

MyM8V8 said:

Why would you want to replace a 2.2 litre blower with a 1.9 litre blower? For the difference in cost you might as well go 2.3? (TVS2300)

I thought the number (122) was the capacity in cubic inches. So a 122 is a fraction under 2 litres, while the 112 is about 1836cc. So a TVS1900 sits between the two and a TVS2300 is quite a bit ahead.

[ArnieVXR]

Xpuffin said:

IIRC Roger replaced the blower deck on both our units prior to resale.
The problem is the design of the middle bearing journal, the whip of the shaft can cause the bearing to spin, once it starts the alloy being the weak link starts to wear away at the journal making the repair interval ever smaller.
The 112 has no centre bearing, it was a new design for the 122.

Is the bearing you refer to on the lay shaft? Can't be too hard for someone to repair the 'hole' where the bearing goes.

[GaryNoGrip]

ArnieVXR said:

Is the bearing you refer to on the lay shaft? Can't be too hard for someone to repair the 'hole' where the bearing goes.

Sounds like it just needs the hole to be less slippery, maybe threaten it with marriage?

[GaryNoGrip]

j666eds said:

straight swap, mine for yours gary????

Missed this reply, swap your exhaust mate but not the whole car lol!

[snowwolf]

GaryNoGrip said:

Sounds like it just needs the hole to be less slippery, maybe threaten it with marriage?

This is what you use

http://www.loctite.co.uk/retaining-4479.htm

[ARAF]

snowwolf said:

GaryNoGrip said:

Sounds like it just needs the hole to be less slippery, maybe threaten it with marriage?

This is what you use

http://www.loctite.co.uk/retaining-4479.htm

Cheaper than marriage.

[snowwolf]

ARAF said:

Cheaper than marriage.

And it will last longer than any marriage !!!!!

[ARAF]

snowwolf said:

ARAF said:

Cheaper than marriage.

And it will last longer than any marriage !!!!!

28 years and counting....

[GaryNoGrip]

Sorry to drag this up again but noise has returned, have to get it sorted now so just wanted to know if this is an easy diy job or will it need to go to a specialist? Also anything else worth renewing while the charger is off the car?
Thanks Gary

[GaryNoGrip]

Sorry to drag this up again but noise has returned, have to get it sorted now so just wanted to know if this is an easy diy job or will it need to go to a specialist? Also anything else worth renewing while the charger is off the car?
Thanks Gary