I hope I am not asking a question that has already been flogged on the forum but this is my first post so be kind. I acquired my 2006 GT in February. I am the third owner and I have virtually no information about the first owner and whether he made any modifications to the car. Specifically, how can I tell if the SC pulley has been changed from stock? Thanks for any help!
Pulley question
- Thread starter CmdrDCM
- Start date
Congrats on purchasing one of if not THE best car ever made!
Perhaps the easiest way is to snap a good picture of the pulley and post it here and me or one of several other people can tell you if that is a stock pulley or not.
Perhaps the easiest way is to snap a good picture of the pulley and post it here and me or one of several other people can tell you if that is a stock pulley or not.
69b302
GT Owner
Most non-OEM pulleys are in the 2.7/2.8” range. Stock is 3.25” I believe.
Anderson
GT Owner
Measuring diameter from the lip edges I get just under 3.5” on the stock pulley.
Aftermarket is noticeably smaller.
Aftermarket is noticeably smaller.
Anderson
GT Owner
Highly recommend it plus the tune to go with it. I got mine from Torrie @ unleashed tuning on here.
texas mongrel
GT Owner
Pulley and tune is the cheapest horsepower you can buy. Also a DIY project if you are moderately talented, just an afternoon’s work. With hindsight, I should have quit at this mod as it maintains 100% driveability, but I had to keep on messing! Now have 682rwhp but to be honest, driveability is compromised a little, mostly due to the MAF
Tomcat
GT Owner
I did pully/tune/map/plugs/inlet support...and added a polished Accufab throttle body.
2112
Blue/white 06'
Hmm, I have a 3.8L Whipple with the Mafia and zero driveablity issues.
This is the most spectacular car I have ever been lucky enough to own.
Yes, I am a fanboy.
.
This is the most spectacular car I have ever been lucky enough to own.
Yes, I am a fanboy.
.
texas mongrel
GT Owner
With the awesome-looking cold air intake installed, depending on side winds and other weird stuff, the car sometimes drops its idle speed or even stalls when coming to a halt. I’ve been told that it’s because of the MAF’s location. Doesn’t do it often, but irritating when it does
DakotaGT
GT Owner
I am familiar with this issue on these custom intake setups. I highly suggest you try this (or something similar) :
4.5 Mass Air Flow Straightener Honeycomb Screen | Performance MRP
MRP screens are the best solution for stabilizing air flow for any MAF sensor. Improve MAF readings, throttle response, and idle. Made in the USA.
performancemrp.com
Very easy and cheap to try, and I suspect you'll be pleased.
Tomcat
GT Owner
I was doing research last year about cross-wind/MAF/laminar flow and I (thought I) understood it was a very uncommon but "known" anomaly (modified or stock)...experts?
texas mongrel
GT Owner
Cool! I’ll give it a try, will be the cheapest fix in history if it works. Thx for the heads-up.I am familiar with this issue on these custom intake setups. I highly suggest you try this (or something similar) :
4.5 Mass Air Flow Straightener Honeycomb Screen | Performance MRP
MRP screens are the best solution for stabilizing air flow for any MAF sensor. Improve MAF readings, throttle response, and idle. Made in the USA.
Very easy and cheap to try, and I suspect you'll be pleased.
I was advised by the Roush calibrators who worked on the GT project that it was sensitive enough to this that if you left it idling with the engine cover open and there was enough cross wind it can stall from idle.
We tried it and they were (unsurprisingly) right.
The engine cover is part of the intake system blending air from outside with air from the engine compartment. Without the cover it's drawing fresh air just from the two intake ports of the air box and if that's not even from both sides it gets upset.
The stock GT gets it cold air directly from the large ducts on the clamshell. You will notice that the rubber "boots" on each side of the airbox will seal against the clamshell when closed. It is VERY hard to improve upon this design. Not sure what "cold air" system you have, but it is good that you like the design because in function it's quite possible to be inferior to the OEM set-up.
Tomcat
GT Owner
I was advised that even just adding K&N air filters could manifest the cross-wind/stall situation. I experienced it twice (once the engine died and once it just stumbled) in strong (coastal) 90 degree crosswind condition at idle (with no forward velocity) at a stoplight.
DakotaGT
GT Owner
Here is my custom-made intake. I was having the same issue with wide and constant fluctuation of the MAF readings, causing erratic idle and frequent engine dying when I would let off the gas (especially when pushing the clutch in and letting off the throttle at speed). The honeycomb material worked amazingly well in my case to stabilize and streamline the airflow and instantly cured those issues. Your results may vary.
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