TB993tt

</font><blockquote><font size="1" face="Verdana,Tahoma,Helvetica">quote:</font><hr /><font size="2" face="Verdana,Tahoma,Helvetica">Originally posted by vrus:
<strong>TB993TT,

Thanks for your reply. This is the main reason I have been looking at getting different units to try. I am not a believer in marketing and just love to tinker, so I am always swapping parts to see for myself if a manufacturer's claims live up to the real world results.

I have had the stock intercooler on my car since I took the car out of storage. Unfortunately I dont have an I/C temperature gauge hooked up, nor do I have a datalogger so I cant tell if the ECU is pulling boost on me or not.

I am probably going to order a Protomotive unit and give it a try.

Thanks again for the input.

P.S-&gt;Do you have any pics of your car. I love the look of it. I would love to see what those GT2 flares look like. I have been thinking about doing the flares on my car. I have alot of rock chips because I drive it all the time. I figured if I am going to repaint it, I might as well do some body enhancements also.</strong></font><hr /></blockquote><font size="2" face="Verdana,Tahoma,Helvetica">Victor
I will get round to taking some more pics eventually - your web site is great and puts most of us to shame for our lack of contribution.
I would be very interested in the results you have with the Protomotive unit. Do not rely on the Andial/Davtron type temperature guages, they simply do not react quickly enough to the fast changing inlet temperatures. The only accurate way of determining the cooling effectiveness of the Proto v's stock is to test them both at the same ambient under similar overall initial engine temps then note the maximum inlet temp on a Bosch (or pattern) Hammer running through 2000rpm to max revs in say third gear (third allows a reasonably high speed giving the I/C to show if it works -4th 5th or 6th would be better but difficult on public roads <img border="0" title="" alt="[Wink]" src="wink.gif" /> )
Like you I have started using my tt more and boy do these GT2 flares pick up stone chips <img border="0" title="" alt="[Eek!]" src="eek.gif" /> I have been using Shell Optimax fuel (available in Europe) rated at 99RON and adding a product from Silkolene- Pro Boost some info here: <a href="http://www.trentsaab.co.uk/proboost.html" target="_blank">http://www.trentsaab.co.uk/proboost.html</a>
In fifth gear today (22DegC ambient) I saw 1.5bar boost @ 4500rpm

ruffy

Sorry to beat this subject to death,

My I/C hose has popped off again!... and this time, it actually managed to tear the outer retaining lip of the hose off.

There was oil was a fair amount of oil all over the engine bay and i'm beginning to suspect more underlying problems.

Suspect 1: Piston Blowby (only 13k miles done since manufacture)
Suspect 2: Turbo seals
Suspect 3: Faulty bypass valves (?just a guess?)

I'm upset that the hose blew off after the first hot lap (5 mins into the track event)... but i'm more concerned as to how all that oil ended up in the intercooler.

Anyone got light to shed?
Any suggestions or experience most appreciated

TB993tt

Superyellowfly
Any smoke?
I was getting smoke after start up and during investigation, the I/C came off and revealed lots of oil inside - it turned out to be the turbos. I think it was the main shaft which had failed.

vrus

The TT engines usually get a bit of oil in the intercooler, but if you are seeing large quantities of it then you are probably getting blow-by.

Suspect 1: This is a possibility.. Have a Porsche tuner do a leakdown test and see if you are getting good compression.

Suspect 2: Take the pipes off the induction side of each turbo and grab the center shaft with your fingers and try and wiggle it around. If there is play then you have bearing/shaft problems and that is where the oil is passing through. You will need to either get a rebuild or get new turbos.

The reason I mention this is that my factory K16's had this problem on passenger side turbo.

Are you seeing 0.8Bar in 4th gear at full throttle? You wouldn't get full boost out of the turbos if you had this problem.

Suspect 3: Bypass/Recirc valves dont have anything to do with it.. They are located after the intercooler in terms of the air stream.

One tip for putting the intercooler hoses on...

- Spray Brake cleaner on the intercooler pipes where the hoses attach to and also spray it all over the top of the intercooler hoses. Wipe them down really good. It will keep the surfaces dry and free of oil.

If you dont do this, the first good boosted run you make and they will pop off again. Trust me on this one.

- Also, the position of the head of the clamp is important I have found... I have played with the location and found putting the head portion (the part where you tighten/loosen the clamp) turned back towards the air box as far as it will go the best location (for the driver's side). On the passenger side, turn the clamp so that the head portion is furthest in towards the engine compartment..

- Grab a set of the Breeze or comparable clamps.. Get the ones without the ridges/cuts in them. Try and get the T-Handle ones.. They are strong and wont move. I found that the cuts in the stock clamps eventually eat away at the rubber on the end of the hose and eventually shred it.


Also, if you dont already have them, get the Porsche hoses that have the orange ends (these are the stronger ones) or buy a hard pipe kit and get rid of the problem alltogether.

Hope some of this helps.

Anir

Great post, Victor. Thanks for the useful info.

ruffy

Thanks for the advice, I will suggest these factors to the agents.
The turbo is only 20k into it's life, talk about premature wear.
Also the hard pipe kit suggestions? (good or bad experiences)
Cheers
syf

viperbob

The hard pipes are GREAT. They cost me about $600 from Huntley Racing, but I have NO issues with Turbo tubes now. Also, it is cheaper with my constant taking off and putting on of the intercooler to replace just the upper small piece of silicon tubing in the future compared to buying new $300 hoses..

ruffy

thanks bob,
I'll see if the local boys can fabricate one for me...
not sure if its feasible, but they're pretty good most of the time. Don't think a hard pipe would be difficult to make..?

mindovermotors

Hello,
I have a great solution for your problems of boost hoses popping off. Mind Over Motorsports has a stainless boost pipe kit complete with silicone hose junctions,and better clamps. A lot of the problem of the hoses blowing off is the stock rubber hoses expand under boost . If you watch your car under load on a dyno the intercooler lifts up quite a bit and the hoses are only so long. Our stainless pipes do not expand. This will also give more consistent boost to the engine.
They are for sale on our website's home page. www.mindovermotorsports.com
Thanks,
Chris Shaffer

viperbob

That is the same unit that Huntley Racing (RIP) sold. I have it on my car.

Acropora

Couldn't get thru to Mind over motorsports so am getting the hard pipes from Todd at Protomotive.

vrus

That makes 2 of us.. I sent an email to M.O.M. and never received a reply.

Ask Todd to make 2 sets.. I am in for a set..

Analog Theory

FWIW M.O.M. is now a one man operation (Tim Wiener) mostly focussing on dedicated race customers. He is still very much catering to performance street customers as always but just does not have the bandwidth to be as accessible and responsive as he should be. I appologize on his behalf. Although my profile still says Mind Over, I've split off to form Flat-6 Performance, Ltd. which is strictly boutique brokerage sales of Porsche's and Porsche race cars. Thanks for your patience during the transition.

Ziad

vrus

What hoses did you end up getting in the end?

Thanks

vrus

After trying to get a hold of M.O.M I spoke with Todd @ Protomotive and was quoted something like $1200 - $1400.. I cant remember the exact figure.. At that point I didnt want to do it because depending on which turbo upgrade I went with later on, I might have to re-work the hard pipes again..

I ended up getting the Turbo S hoses for now to try and fix my boost leak issue.. I am talking with my fabricator to make a set of aluminum pipes...

Stay tuned..