Brad's '69 project

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bertvorgon
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Re: Brad's '69 project

Post by bertvorgon » 14 May 2014 04:34

For most of my cars life, all we used at Specialty Engineering was a trammel bar and some string...and a less than even floor! It was only when a friend and fellow competitor started working at a good tire shop, did I get to use the so-called state of the art stuff. I bet we rolled cars a hundred miles over the years, as we pushed them back and forth to settle the car after jacking up. The castor gauge we used was from the 1940's or 50's.

Don't forget to have whatever average fuel load in the car, and, you or equivalent weight in the drivers seat. Make sure to give the front a good bounce, to eliminate ANY stiction in his pads, so that toe will be as close as possible to actual target setting.
"Racing makes heroin addiction look like a vague wish for something salty" - Peter Egan

Keith Law
1973 2Door Slalom/hill climb/road race / canyon carver /Giant Killer 510
1968 Vintage 3HP Mini Bike
1971 Vintage 13' BOLER trailer

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S15DET
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Re: Brad's '69 project

Post by S15DET » 12 Jun 2014 11:41

Had a great day at the track Sunday, the car was really fast on the Hoosiers and Hawk Blue's! High oil temps once again halted the fun after just a few laps, but I have a plan for next time. Here's a few pics of my crew at work.
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S15DET
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Re: Brad's '69 project

Post by S15DET » 12 Jun 2014 11:43

Here's a few pics of the brake ducting. This is V1, which has a few problems, V2 is in the works.
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S15DET
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Re: Brad's '69 project

Post by S15DET » 12 Jun 2014 12:03

This past school year I volunteered to help a club at a local high school who were converting a '73 Beetle to an electric car. The trunk (frunk) and rear seat area became battery compartments, so the near-perfect rear seat was no longer needed and the instructor agreed to let me carry the rear seats "to the dump" for him. I used the vinyl material to sew up some covers for the 510 seat frames and it turned out OK. MUCH better than what was there and has been an embarrassment for the last few years. Far from perfect but I'm pretty pleased with my first upholstery job.
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Bike papa
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Re: Brad's '69 project

Post by Bike papa » 12 Jun 2014 14:20

Very Nice,
I sewed up a new seat cover for my dime last month. it's like working with sheetmetal, just a whole lot flimsier!

BP
1971 Datsun 510 2 door
08 VW R32
69 BSA 650 Firebird Scrambler
Too Many Bicycles

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PoorMtnKid
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Re: Brad's '69 project

Post by PoorMtnKid » 12 Jun 2014 15:59

Brad, your running an SR right? Besides the high oil temps, how is your water temps? I have an oil cooler right now but not gauge for oil temps, but my water kills my seat time. I get up to about 215-220 degrees and have to shut it down for a cool down lap cruising in 5th before it gets back to normal.
looking for pass. side arm rest

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Byron510
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Re: Brad's '69 project

Post by Byron510 » 12 Jun 2014 21:18

I am pretty sure that if you modeled a cooling system like I build for my Bronze car (with a significantly smaller reserve tank), I'm sure both of your cars would be more than fine;
viewtopic.php?f=27&t=530&hilit=radiator&start=645

It's labour intensive building a radiator, cost me about $1000 in parts by the time the rad and heat exchanger was finished and connected with all hoses in place. The package however is tidy, compact and works extremely well – actually too well in cold weather for the coolant.
Brad, for you a heat exchanger has the advantage of brining the oil up to temperature in cooler weather - an issue often overlooked in more in climate times of the year - PMK, you won’t have such an issue due to your general geographic location. However it’s safe to say that a good rad with a heat exchanger keeps both oil and water temp constant which is very beneficial.
For the Bronze at it’s current output – that coolant system is quite overbuilt. At an ambient temp of 90 degrees, those two fans can drop the engine temp 20 degrees effortlessly in less than 1 minute. It’s impressive.

Just thought I’d share my solution.

Byron
Love people and use things,
because the opposite never works.

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S15DET
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Re: Brad's '69 project

Post by S15DET » 13 Jun 2014 04:52

My water temps are rock steady (Ron Davis radiator and large Ford Taurus fan), rarely going much above 200, while my oil was hitting the 270's, and I would cool it back down to 230 with a couple of top gear slow laps. My tuning friend asked about my A/F ratio, and upon hearing that I was mid 12's, he said "that's your oil temp problem". I was a little puzzled, but he explained that they have instrumented cars to show the correlation between A/F and EGT, and that mid 12's are putting a LOT of heat into the turbine which is really heating the oil through the turbocharger. I said I would be SHOCKED if I could see the temp of the oil in the turbo oil drain. So my plan is three things...
1) Remove the Volvo oil thermostat for track days in favor of full flow through the cooler (not good for daily driving, but fine for a track weekend)
2) Increase the size of my oil cooler and integrate it with V2 of the front air dam which will also have revised brake duct inlet spacing.
3) Invest in a way to tune my A/F. The best compromise of cost/performance seems to be Nistune, since I already have the USB/Consult interface cable, I just need to install the daughter board and buy the software.

My next event may not be until Sept. so I have plenty of time. Byron, your integrated oil/water heat exchanger is impressive, very nice solution.

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S15DET
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Re: Brad's '69 project

Post by S15DET » 13 Jun 2014 05:33

This was my reminder that when the dust from Hawk Blue's (maybe Black's too) get wet, it turns into this hard crust that's damn near impossible to remove. It rained on the way home Sunday and these wheels were on the roof of the car. A few hours after I got home I took these pics. The roof and trunk of the car was also covered with black sludge but it washed off. I've read that the heavy duty, yellow-can Easy Off oven cleaner will remove this stuff, so I'll try it this weekend and let you know.
I should have gone with Carbotech, as the dust is not corrosive like the Hawks.
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S15DET
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Re: Brad's '69 project

Post by S15DET » 13 Jun 2014 05:36

A few more, same crud...
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PoorMtnKid
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Re: Brad's '69 project

Post by PoorMtnKid » 13 Jun 2014 07:26

So what would his ideal A/F ratio be to cool down the oil temps? I'm running the ron davis radiator also. Does your intercooler cover the entire radiator? Or do you have some room for direct air access to the radiator?

Also what Turbo are you running and boost?

Thanks
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S15DET
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Re: Brad's '69 project

Post by S15DET » 13 Jun 2014 07:55

He said to target 11.5:1, on boost at WOT. There is a slight bypass directly to the radiator, but it's mostly covered. I'm running a T28, at 10psi. Do you have any Nistune experience or other recommendation?

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Re: Brad's '69 project

Post by PoorMtnKid » 13 Jun 2014 10:41

I think that is the route Im going to go is a T28 at 10-12. Did you need to go with larger injectors to accomodate the T28? Im running the Nistune however I did not do the tuning my self. I think for what we are after it makes sense to use it and not go full stand alone. I spoke to Nistune Directly because I really dont like the guy who does the Nistune locally, they said I would need the license and consult cable and I can tune on my own. I just have no experience with that so I dont know if Im up to the task right now.
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Re: Brad's '69 project

Post by S15DET » 23 Jun 2014 06:41

In true dual-purpose fashion, the 510 went from the racetrack last weekend to driving my family to the beach this past weekend. We made a 350-mile round-trip to Myrtle Beach with the trunk full of beach gear and three kids in the back seat. The cloud coverage made it bearable, although certainly less than pleasant. I figure we were the only non-AC car within miles. It was my wife’s idea to take the 510, thinking it would make our weekend trip more of an adventure, more memorable and character-building. But despite the heat and close-quarters my kids did great and hardly uttered a complaint. For the trip down I actually took the quarter windows OUT, we were driving on the grand strand and the kids had their arms resting on the sils just like the front. They had an unobstructed view of the Myrtle Beach sights and sounds. The car did great, cruising at a steady 200F oil and water all day, highway speeds or bumper-to-bumper beach traffic.
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Mattndew76
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Re: Brad's '69 project

Post by Mattndew76 » 23 Jun 2014 10:45

You have a mobile time capsule.. The kids look pumped to go, and progress to napping. Must be a smooth ride :)
An Idea doesn't work unless you do.

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