No! Well at least not mine

 

I hope no one else uses your example as a template. I could be wrong but IMO your margin for error is crazy small and you will receive many PM's telling you the same thing.
I didn't know Tim ran 8psi with no IC for a long time?
Here is another example of detonation, just ain't worth it to me.

 

I dont know what psi Tim is running on his wifes car. I thought I was told 8psi. Pmotts I respect your input, but do you have a purpose with your skepticism?
Kevin

 

Great Job Kevin! Congrats on getting it installed.
My guess is that your boost gauge is reading a little high. You should only see maybe 8 psi peak boost on a cool dry day. 9 psi is a little high and if that is truly the case then we should knock it down a little by changing out the sc pulley. According to your post you mention you have chips in the car? If you have the stock chips I would recommend putting them back in. If you don't have the stock chips let me know and I will burn a set and send them to you.

Now for the rest of the story:
Kevin had been talking to me for quite awhile about getting one of my kits. He came across a great deal on a polished supercharger that is exactly the same as I use for all my kits. After discussing it with me I agreed that it was a good deal and I would provide him the kit and deduct the cost of a new sc. Kevin received the kit and called me complimenting me on the quality of all the parts and was totally excited to get it installed (just talking to him I was getting all fired up). I think he only called me one time during installation with a question on the fuel lines to and from the fmu, but other than that he breezed right through it. After getting it installed the car wouldn’t make more than 3 psi boost. After some discussion of check this and check that we narrowed it down that it had to be something with the sc. I sent him a brand new one to try and sure enough, that was the problem. (Kevin, email me the serial number off the used sc and I will give Vortech a call and see if I can find out anything). I never would have imagined there would have been a problem with it but I guess there is a first for everything.

Here is a picture of a stage one kit on an 87 auto.

 

I'd like to hear more about the forged pistons and piston squirteres in the early S-4's can anyone elaborate on this and supply more details?

Kevin, thats awesome. I hope to join the boost club within the next year. Keep us posted.

 

8 psi is too high for our motors if they are non IC, that's my purpose/point Hopefully Tim's post convinces you of that before you fry your motor.

 

https://rennlist.com/forums/showthre...=oil+squirters

 

Making statements of concern is one thing. Making statements that are pessimistic is another. I think that was Kevins point.

 

I am very pessemistic about running a non IC motor at 8 to 9psi. OTOH you have forgotten more than I have ever known about supercharging 928's so if you think it is safe I stand corrected... but would never do it

 

That statement and picture are false and do not help anybody. It is fear mongering at best, and is useless no matter what.

 

No, its from a dome topped piston that probably cam eout of some ancient 2V motor.

Our handle boost like they were meant for it. Wait, the head chamber and head design was used in the 959, so we aren't that far off on the branch of the family tree.

The picture and statement are useless to this discussion.

 

I'm good with that and I agree. My intention is to run the stage one (and current stage two) under 8 psi. One of the main reasons is that is all the fuel that can be provided with the stock fuel system (with some margin). I ran a stage one at 9 psi and checked the fault codes with the Bosch Hammer and it did not record any knocks. I ran with and without water/methanol injection on the dyno and the car lost HP when running the water/methanol injection. FYI, most of the guys running water/methanol is so they can advance the heck out of the timing to make more power.

I have a Shark Tuner with the EZK upgrade and will do some more testing in the very near future. Among the great things that John Speak did was to add the ability to data log the knock signal. This is huge for what we are doing. Up to this point I have tested the entire systems functionality to make sure I have the right recipe with the exception of being able to data log the knock sensors. I've done the egt's on all 8 cylinders, wide band, injector duty cycle, fuel pressure, etc. All tests done simultaneous with respect to boost and rpm.
I will know very soon to a better degree what the limits are with the stock engine with the use of the Shark Tuner.

 

Thank you Tim and Brendan for clarifying this boost issue. Pmotts, I have never had a chance to meet you here but I sense a hint of sabotage in your posts. I had a friend from a local (huge) tuning house over to inspect what I had done as far as the install. After profusely complimenting the quality of Tim's kit as we were having coffee, he assured me everything would be fine. This was after he did some calcs and learned a bit more about the s4 5.0 engine. Even did some free testing for me on his own time. He was impressed how little you have to do to prep a 928 for boosting, as he complained of how much work his mustang required. Tim really cares about his clients cars and bends over backward for us,he has the furthest extent of my respect.

 

Michael/ Brendan, unbunch them panties.

Tim, thanks for the quality info.

 

Kevin, I'm sure your perception is shared by many.