Lemming

Glad to hear that it went well. Started mine today, bit rough at idle but will work on it. Couldn't let it run for long as it's on the lift in the garage and the wife started complaining of fumes

Lemming

What I hope is the final placement of air intake system and intercooler. This of course is for a 944S with 968 engine. I'm fairly pleased with the result.



The 944 fuel return line must be different from the 968. The hard line that came with the kit does not fit on the return line, luckily the flex line does. To be honest this shortened setup works better in my opinion. I plan on getting some heat shielding to surround the flex line since it is sitting directly above the headers.



Dyno is now scheduled for Oct 1 and first track day will be Oct 6th if all goes well.

Jfrahm

Pretty good! I would suggest being ready to move the MAF closer to the air cleaner, or switching to a hybrid recirculation valve (that dumps some air to atmo) in case the turbulence from the air return is a problem. I had too much recirculated air at idle and at lift-throttle, that caused a bouncy idle and some issues at light throttle cruise, as well as some stalling at lift throttle sometimes. Moving the MAF cured everything, it was mostly a problem with airflow over the air meter element.

In your case you have so much volume downstream of the blower it might not be a problem at all, but you never know.

Looks badass.
-Joel.

Lemming

Joel,

Any suggestions on a good recirculation valve?

Tim

Jfrahm

Everything I know on the subject:

https://rennlist.com/forums/968-foru...ml#post7759871

Lemming

There were a few hickups today while running the car. On Sunday, the car ran great, bit of a stumble at idle but not too bad. Car did want to stall when the throttle was chopped but it stayed running. Today was completely different. Started just fine, pulled into driveway and idled for about 5 minutes. Revved the engine a few times and it died. Would not start without applying gas and would run as long as I kept gas applied. Pulled the car back into the garage. I thought that I might be low on gas as it has to be very close to being empty so was determined to put gas in tomorrow and try again. However, Joel's idea sounded like something I should try so I moved the MAF closer to the air filter.



However, when I took the system apart I heard something clattering. Turns out that part of the plastic screen on the MAF had broken off and it looks like it took out the MAF sensor wires.



What you are looking at are zip ties that are used to hold the "air straightener" on the MAF. This keeps the aluminum straightener from being sucked into the SC. Well, luckily I have a spare MAF so I pulled it out and put it in the system. I'm going to try it tomorrow without the straightener as I don't want to destroy another MAF. Will report in tomorrow night, unfortunately it is too late here for me to start the car

I also noticed a nice shiny bolt in the driveway after coming back into the garage. After some hunting I found that it is the bolt that holds the pulley on the supercharger. Guess that will get some loctite when it goes on tomorrow. For those of you with SC's, check your pulley bolt!

Lemming

Hey, who has my back Didn't anyone notice that I have the recirculation valve on backwards?????

Carl Fausett

I like the flow through the intercooler and out again. Good job.

Lemming

Ok, got the recirculating valve on correctly, and put the nut back on the main pulley. Started the car and it is sooooooo much smoother. Idles just fine and does not want to die when I chop the throttle. Moving the MAF further away really helps (thanks Joel!). I am not running the air straightener and still works well. Video of the car running will be up on Vimeo soon http://www.vimeo.com/15175013

Damian in NJ

Great video Tim.

edz968s

Nice install.
What make of i/c is that?
Sound just like mine. I have limited room to move the MAF any further away, so have to keep the `honeycomb` filter, but I`ve done a few hundred miles with it now and seems to go well, just need that a/c comp to try and get the missing ponies.
Looking forward to your rolling road results

Lemming

Once I get the body work on it should be much quieter, hopefully just a nice little whine at idle

I just got a second AC comp to play with ($15), you need to check out the junk yards for one. I'm going to try to turn the carcass of this one into swiss cheese to save more weight. If all goes well, I'll have proper whine and cheese

odurandina

does an intercooler present resistance to the blower ?

Rogue_Ant

Some of course. The resistance is typically measured in pressure drop per amount of airflow across the intercooler. Most likely less than 1psi for Tim's setup.

Lemming

I'm hoping the cooler charge air will make up for the loss in pressure.