Budget '69 Camaro Track Car - NO WHINERS!

[sixnina]

Originally Posted by Vince@MSperfab

what about a sheet metal piece, would you guys be interested in that in .060 or .090 6061? I'll check with my laser cutter. He has been slammed with Tesla contract work so I hope he can squeeze this in.

0.60 sounds good Vince. Just let me know also what it will cost.
Thanks Shane

[Track Junky]

Originally Posted by Flash68

So how did Joe try total timing at on your latest dyno session? How high did he go before reverting back to 32.5?

That is a huge difference to go from 37 to 32.5 for a 23* head. Timing is largely based on the efficiency of the head's combustion chamber, but you did not change heads, so I am confused.

I don't think I've seen a 23* head with such low total timing.

I agree, definitely a huge difference but one that I was happy to see. I'm not an engine builder so I cant give you an educated answer to your question. All I know is the first thing we worked on was ignition timing. Joe would make an adjustment, we's make a couple pulls, and then repeat until Joe liked it

Originally Posted by Vegas69

What is being done to control windage? Are you running a windage tray? Have you tried dropping the oil level say a quart?

I wouldn't even race it until you figure it out. Losing 15 lbs of oil pressure from 3000 to 6500 rpm means you have a serious issue. With an oil temp of only 174 on the dyno, it's going to be worse on the track. Especially if it's a windage issue which it almost certainly has to be.

Oil pressure should climb with rpm.

Pan uses a screen for windage. Good call on dropping a quart. I know for a fact we had 7 quarts in a 6 quart pan and that was my decision only because I'm afraid of sucking air when on the track due to this happening to me before but with a different pan. When I get a chance I'm going to drain the oil and refill with 6 quarts but before I do I'll record rpm's and oil prssure the way it is and then record oil pressures with 6 quarts. If this doesn't remedy the issue I will probably cancel the track day.
Thanks for your input Todd.

[Track Junky]

I took some oil pressure readings but went with water temps beause I am now using the oil temp bung in the pan for the dip stick.

Initial start up cold at 1000 rpm was at 68 lbs
Temp at 180, rpm 750, oil pressure 53 lbs
Temp 190, rpm 750, oil pressure 52 lbs
Temp 200, rpm 750, oil pressure 48 lbs
Temp 205, rpm 6300 and held for a few seconds, oil pressure 62 lbs

I asked Joe why the difference in readings and he said because the dyno was running the engine through an oil cooler and it had an adjustable flow restrictor.

Needless to say I am now relieved.

[Sieg]

Not much worse than Gearhead Hypochondriasis...........not that I would know much about it.

I worry more about potential mechanical issues with the Camaro than waiting melanoma biopsy results.

Hopefully that's all it was, to be safe don't drop your guard.

[waynieZ]

Glad to hear it was something simple.

[Track Junky]

Originally Posted by Sieg

I worry more about potential mechanical issues with the Camaro than waiting melanoma biopsy results.

Hopefully that's all it was, to be safe don't drop your guard.

I know exactly what your talking about Sieg. This is what seperates us car guys from the rest........sometimes I wonder about my priorities

Originally Posted by waynieZ

Glad to hear it was something simple.

Thanks Wayne. I appreciate that. Hope things are going better for you.

[Vince@Meanstreets]

and here i was getting ready to tear it apart thursday afternoon and have it ready by friday night. I guess its date night.

thanks for looking out guys.

[Vegas69]

Originally Posted by Track Junky

I took some oil pressure readings but went with water temps beause I am now using the oil temp bung in the pan for the dip stick.

Initial start up cold at 1000 rpm was at 68 lbs
Temp at 180, rpm 750, oil pressure 53 lbs
Temp 190, rpm 750, oil pressure 52 lbs
Temp 200, rpm 750, oil pressure 48 lbs
Temp 205, rpm 6300 and held for a few seconds, oil pressure 62 lbs

I asked Joe why the difference in readings and he said because the dyno was running the engine through an oil cooler and it had an adjustable flow restrictor.

Needless to say I am now relieved.

Good to see your oil pressure is where it belongs. The explanation Joe gave you doesn't make any sense to me. Wouldn't that limit max oil pressure, not having it fall off with an RPM increase?

In regards to your extra quart. That was a good band aid for poor oil control with windage as your side effect. I wouldn't do it on this setup if it's a quality pan. Windage is BAD.

Needless to say, track test it and look when everything is HOT.

[Sieg]

Gae - You run a remote filter system on the car.......what filtering were they using on the dyno?

[Track Junky]

Originally Posted by Vegas69

Good to see your oil pressure is where it belongs. The explanation Joe gave you doesn't make any sense to me. Wouldn't that limit max oil pressure, not having it fall off with an RPM increase?

In regards to your extra quart. That was a good band aid for poor oil control with windage as your side effect. I wouldn't do it on this setup if it's a quality pan. Windage is BAD.

Needless to say, track test it and look when everything is HOT.

I hear what your saying......I imagine if I were in charge I would have opted to adjust for more oil pressure. My position on dyno day was to trust what he was doing. This wont be my last go around with Joe.....I'll get a better explanation when I talk to him again.

As far as the extra quart this is my view and please correct me if it doesn't make sense......I filled the pan with 7 quarts of water before I installed it just to see how close to the crank it would be. Water level came up even with the windage screen. My thoughts were if I'm up in the rpm's all the time how much oil is left in the pan?.....especially at the end of a long straightaway before coming into an uphill left handed corner(which is how I retired a rod bearing on my last motor).