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Noah..is there any way that you can get that 90degree coupling into 2- 45degree pieces? Might be better for the air flow..looks like a "choke" point to me..maybe it doesn't matter much, I don't know what the airflow rate is at that point, but but dividing it into 2 or 3 bends the air will flow better..just my .02 cents looks as though you are doing a fantastic job there..keep up the good work. cheers!
You're right some improvements could be had. Perhaps in the future I can weld some pieces together or buy replacements... and install "v band claps" for easy disassembly/assembly. For the time being I need to work with my tight budget.
I was looking for a picture of the Callaway piston on my computer, you beat me to it. Btw I have successfully milled aluminum with my hand-held wood router using many shallow passes. Used this method a few times on small parts when I just needed it done. Not advising you practice by milling your pistons installed in their bores, but if it was my engine and I was going to replace the pistons i would give it a try just for giggles.
this post kept me up last night...
i was thinking about getting a router anyways...and pistons are everywhere...
Seriously though it works very well and I only used the wood bits I had running at high speed. First time I did this was on an 1" square aluminum bar and I needed two notches 1/4" deep for it to fit where I wanted it on my trailer. I was careful and it came out perfectly, would have taken me ages with a saw and file and probably not as good.
My plan for the head is simple. Stock compression 8:1 head, stock n/a head with mild porting and also 30 degree undercutting of the intake valves. Besides that, just a simple re-lapping of the valves & replace the valve guide seals. Also gasket-match the intake & exhaust ports. Lastly, i will install new turbo grade valve springs. And just give the head an inspection for warpage and thread damage.
Not sure if undercutting the exhaust valves is recommended. Considered bumping compression to 8.5:1, but that means two trips to the city... though I think it would make for a faster car at autocross & around town.
-Geez, I didn't know the 951 TPS was so expensive, so I better get this right.
Since Wilson will be stand alone & requires a potentiometer style TPS to work with the stock n/a throttle body, would you you guys recommend the 951 TPS to mount on the n/a throttle body? Will the n/a connector fit on a 951 tps?
It's very good that they provide the latency, this is a key input into your tuning software that often gets overlooked.
It's a little late I guess but the Siemens Deka 80# injectors are ~$150 for 4 and have the same qualities as the ones you posted. They get rave reviews and have a great spray pattern.
Noah - take a look at (two-valve pre-2005) Ford 4.6 throttle body (and their mating TPS since you can use anything).
It is a "close fit" to the 944 NA intake manifold, as in you need to drill two holes in the throttle body flange (or new holes on the intake manifold).
Stock they are 65mm and they are EVERYWHERE...stock 944 is 55mm.
Here is a dyno graph on a 3.1L 944 turbo, with the only change being swapping the stock 951 throttle for the Ford piece.
It's very good that they provide the latency, this is a key input into your tuning software that often gets overlooked.
It's a little late I guess but the Siemens Deka 80# injectors are ~$150 for 4 and have the same qualities as the ones you posted. They get rave reviews and have a great spray pattern.
$hit!! I should have asked you first about injectors. It is too late now.
Curious what the resistance in on those injectors? Where to get them? Got a link?
02-20-2017, 10:19 AM
about injectors. It is too late now.