Mt tts supercharger kit

[Doug_S2]

PG - I put a new stock clutch in mine in the end to see how it lasts and it has been perfect - We have some more options for single mass flywheel and clutches coming soon. The ceramic sachs ktis are very snatchy which a lot of people dont liek on an everyday car - but if you want to do launches you are going to have to go for the best clutch you can.

The install time should be 2 days for the kit. Other parts or work like carbon cleaning will make it longer. Dannys and Georges (one of the french ones) took longer as they were the first full production kits and we had to perfect the production parts and jigs.

There is less torque on the tts than the pes m112 until 5k but that is were the tts kit really starts to produce power, and when you go through the gears you are not below 5k.

We have not had issues from gearbox and we are running a b7 box on a 640ps b5 with 800nm of torque which I think will give it more abuse.

I have let a customer drive mine that has a 650bhp B5 RS4 and he was shocked - he says the torque is obviously less than the twin turbo but it feels faster top end.

[P_G]

Thanks Doug, just for clarification my comment wasn't written as a criticism because Danny was saying yesterday that you had been running a stock clutch so it was feasible just I know Danny will be doing a lot more VMAX and track events than I would so needs a more robust clutch so I doubt I'd need this for day to day driving. If I had the money I would be booking my car in to you in a heartbeat and it stops me thinking about buying a newer car.

[JackS4]

Doug - do you have a dyno plot you can post comparing stock, MRC stage 2 (incl Miltek CATs if possible) and supercharged ?

I am assuming oil changes will be at more regular intervals ? Also, without starting WWIII, does the supercharger have any inpact on CB on the inlet valves ? Is handling affected with the extra weight of the SC ?

Cheers,

J

[Doug_S2]

I'll so some comparisons of different spec cars when i get on the dyno pc later.

Oil should be replaced on a more regular basis.

We have found the supercharged cars get a layer of black on the intake and valve but they do not build up other than that.

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Dougs comments what I figured - slightly less lower down torque (which isn't always a bad thing) but manic top end. Perfectly suit the character of the V8.

Common misconception that forced induction cars are always under pressure - under cruising conditions the SC will largely be bypassed. So with regards to CB I would expect it to still be present however any italian tune will be more effective as the increased manifold pressure and airflow would hopefully prevent huge buildup as any loose bits would be dislodged before they can solidify and develop.
The only (minor) concern I would have on this is protecting the chargecooler vanes/matrix as from what I've seen on the photos it sits between the charger and intake ports.
Just for the record - This is purely my uniformed speculation !

[S4Player]

Handling isn't effected it's not like your adding massive weight to the car, I presume the stock intake mani isn't exactly light. the tts is billet and is a fair bit lighter than the pes kit I had even with the pes which was quite heavy it didn't effect handling. My car after 9k miles on supercharger it had little to no cb but had been cleaned before and treated by Mrc not sure if the work they do has an effect on cb build up post clean but I suspect it might.
Pg I owe Nigel and apology it was him that said Doug had a stock clutch I thought he originally ran a stock clutch and upgraded to Sachs. I'll get the performance box on it and do some third gear pulls 0-62 will be a bit difficult in this weather

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Doug beat me to it!
Thats cool - even conventional non FSI cars have an element of soot in and around the valves.
My 211 had sooty residue all the way up to the throttle body... if you see any photos of a 211 engine bay and the (crazy) length of the intake tubes from the charger to the cooler and on to the TB you'll appreciate how impressive that is!

[deltav]

The only (minor) concern I would have on this is protecting the chargecooler vanes/matrix as from what I've seen on the photos it sits between the charger and intake ports.
Just for the record - This is purely my uniformed speculation !

Not quite sure I follow what you mean here? Do you mean there will be carbon build up on the charge cooler vanes?

If so then I do not see an issue, the carbon build up on the valves of standard cars is made so bad by the heat of the valve and general engine baking the oil and crud to the surface of metals. any oil that makes it around the system from the breathers back into the sc system will not only get converted into a very fine mist by being compressed through the supercharger but it also gets put through the cc cores at very high air speed onto a cooled surface which causes the oil vapour to essentially condense back to liquid form (same way allot of liquid cooled oil separators work on stock cars. You will always get a blackened surface on the fins due to this but it would take a very very very long time for any significant build up to develop.

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The issue with the carbon build up is that after alot of trial error the problem is looking more and more connected with the valve stem seals or/and the use and implementation method of internal exhaust gas recirculation. The net effect is that I believe the deposits are coming back out of the cylinder and up the intake path rather than out the exhaust valves. This is why people who have fittted catch can's find nothing as the oil seperator (when working) performs a really good job of pulling the oil out.

The patent from VW going into this makes reference that the deposits are actually pretty susceptible to heat and maybe why a decent italian tune can reduce these and daily commuter cars in start stop traffic suffer more.

What I was thinking is that the mesh on the intercooler is the ideal medium (in terms of size and design, not temperature) for the deposits to form. I wasn't saying this would happen but more thinking out loud.

[Doug_S2]

I think that is too far away to worry about build up on the coolers

[JackS4]

Doug what sort of 0-60 and 0-100 times have the TTS charged cars run ?

J

[deltav]

I agree with doug on this, its such a long distance away from the valve that i cant see much reaching that far. even from the bottom of our core to the bottom of our manifold is around 70mm, then alowing for the port in the head its well over 100mm away as shown in this cut through.

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Thats cool - as I said, was purely an uninformed thinking out loud kind of thing

[RS4POWER]

The issue with the carbon build up is that after alot of trial error the problem is looking more and more connected with the valve stem seals or/and the use and implementation method of internal exhaust gas recirculation. The net effect is that I believe the deposits are coming back out of the cylinder and up the intake path rather than out the exhaust valves. This is why people who have fittted catch can's find nothing as the oil seperator (when working) performs a really good job of pulling the oil out.

The patent from VW going into this makes reference that the deposits are actually pretty susceptible to heat and maybe why a decent italian tune can reduce these and daily commuter cars in start stop traffic suffer more.

What I was thinking is that the mesh on the intercooler is the ideal medium (in terms of size and design, not temperature) for the deposits to form. I wasn't saying this would happen but more thinking out loud.

This is a legit concern, it has been documented on the B8 S4. I am not sure on the distance of the coolers but there was oily residue on the mesh and iirc the car had less than 20k miles on it. I will look for photos...

[Doug_S2]

you will always get oil in a manifold as the cars breathers are fed back in to the intake. The coolers and top of the runners - above the phenolics will never get hot enough to bake that on like on the valves or ports of the heads.