Wednesday, February 14, 2007 - 09:50 am, by: Drew Hiron(Frag)
Hi guys, i hope this is in the correct section.
I have a 91 Soarer TT, only mods being an FMIC, Cat-back exhaust, a BFI & running a shade over 10psi (no boost controller).
The problem with it is I can-not stall the engine up anything over roughly 2100rpm, the wheels start spinning and thats that. My boost gauge at best reads about 1 PSI at these RPM's and as such, i get fairly slow 1/4 mile times with terrible 60ft's.
My rear tyres are 235/45/17, Dunlop Le Mans LM702 with a lot of tread still left.
Please can anyone tell me if its possible to adjust the stall at all? OR am i just stuck with this until i eventually go down the Big Single, built tranny path?
Wednesday, February 14, 2007 - 10:09 am, by: Benjamin Burgess(Jampac)
Wheel spinning at 2100 on standard stally means your rear brakes are rubbish. Try stalling with both handbrake and footbrake applied and see what happens. I have this problem as well after I changed brake pads were I wheel spin over 3200rpm, and using both brakes is the way around it or you have to install biasing valve.
Wednesday, February 14, 2007 - 07:48 pm, by: Joshua White(Joshua_88)
hey guys, i have the superchaged v8 with the TT brake system but it'll get to 1800rpm and get spin so the charger isn't within its best area so its a lil sluggish till it gets going. will these brake ideas apply to me as well?!
Joshua White Tinkerer Qld SC400 GT V8 Supercharged
Thursday, February 15, 2007 - 10:20 am, by: Joshua White(Joshua_88)
alright. so do you think i should look into new break pads and also i was wondering about the compound. whats the best set up? like soft and hard and all that
Thursday, February 15, 2007 - 10:55 am, by: Drew Hiron(Frag)
Daniel : Sorry for the slow reply mate!
I was at Willowbank last May. My best time was as follows:
60ft: 2.271 ET: 14.629 @ 98.58MPH
This was with a Catback exhaust & an FMIC running 10psi according to the gauge. I was launching at 2000rpm and just letting the Transmission do the shifting.
I cant wait to see what difference this will make.
Thursday, February 15, 2007 - 02:05 pm, by: Peter Nitschke(Pen)
Joshua, it's an unusual use for the brake pads, so normal thinking goes out the window. You aren't using them to stop a spinning rotor, you are using them to keep a stopped rotor stopped.
First suggestion would be to fit TT rear brakes as they add 16% more braking force due to the extra leverage.
Then I would be thinking soft pad, and definitely NOT a performance pad, as they need to get hot to work properly.
Which probably brings it back to OEM or the Lucas which have more bite even when cool.
I have TT rears and Lucas pads on my GT40 and I can't spin the wheels with the brakes on - I used to be able to. I know it's not as much grunt as a S/C but it's pretty healthy for a stock V8.
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