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1973Formula · 12-12-2008, 12:15 PM

TAKID-

Engine looks great. I am getting ready to do mine(L75). What type of paint did you use? I have some hi temp dupli-color engine primer that I am going to cover with PPG single stage enamel. I would hate to see it all burn off after a couple of heat cycles. Do you have any suggestions for me? Yours' turned out great.

-Tom

takid455 · 12-12-2008, 11:28 PM

Thanks for the complements. I was expecting to get nailed by the purist

. I found out that I need to loosen the drivers header to install the starter

. other than that and some vacuum line routing, I should just about be ready for firing. I do have a few questions though.
1) I have a dark blue wire and a connector with a blk/orange and tanish wire without a home. My wiring diagram tells be the connector one is for an electric downshift solenoid. didn't think manual cars had this? not sure about the stray blue one. Reverse light switch on the trans?

2) reverse/ 1st linkage rod as the book calls it from the frame bracket to the trans does not clear the headers. Can this remain off or is there a solution to this? If I have to bend the crap out of it, I'll find another one and keep this stock one on the side.

Quote:

Originally Posted by Brewster

Yes, and the plug was in place before painting if you want to replicate the original look??

When I get one, I'll paint it prior to installation and hope the paint doesn't crack.

Tom - I used Dupont ChromaOne( single stage). I've used this on several engines and it holds up very well. The only place it burns off is on the center exhaust ports on a 'D' port head. I have not found anything that stays on the center ports unless you don't drive the car. I have asked many engine builder and paint shops about this as well. Bill Hirsh burns off after time as well. This is the first round port head I've done, so we'll see if there is a difference in paint burning on the center ports. I add a little hardener to the mix for the last coat to make it extra chip resistant, but it very chip resistant without the hardener. the high build primer is a Nason (Dupont) product. I don't have any experience w/ PPG as I have always used Dupont. Once you get all the additives for one company, its can be rather expensive to switch to another brand. Hope this helps you out.

johnta1 · 12-13-2008, 01:47 AM

The dark blue is probably for the oil pressure switch.

The other one may be the downshift switch

superdutybob · 12-13-2008, 12:22 PM

I agree with johnta1 about the blue one going to the oil pressure sending unit. The other should go to the switch that is in the cover of your BW ST10 transmission. It controls vacuum advance until high gear. Should be a single black wire with an orange stripe with a spade type connector.

Hope this helps.

takid455 · 12-13-2008, 01:31 PM

The oil pressure gauge also has a dk blue wire. that is hooked up. all 3 of these wires are in the same harness

johnta1 · 12-13-2008, 02:02 PM

Is this the original wiring harness?

Here's a partial pic of 74's wiring diagram.

73's was a little different. (different color)

takid455 · 12-13-2008, 04:19 PM

It appears to be wires for the TCS GRD and elec downshift (2 prong connector) and the thermal override switch. where are they located? what do these switches look like? Most of the wiring was disconnected and some of the engine partially disassembled when I got the car. there is one switch on the trans directly under the forward most shift linkage that is a one prong unit that I don't have a wire connected to yet. is this where the dark blue wire goes for the thermal over ride? As far as I can tell, this is the original 74 wiring harness. Being original, when I laid the harness over the engine, just about all the plugs laid right where they needed to be.

chuckies76ta · 12-14-2008, 07:44 AM

Quote:

Originally Posted by takid455

after soaking w/ grease remover

Someone has to explain these two pics to me. I must be missing something or I need a new brain..

lol

The first one looks correct, except for the valve cover on the left side.

The second one has the thermostat housing pointing left, and the fuel pump is on the left side. Valve covers look to be correct. Pulleys look correct in both pics. Distributor is in the back on both pics.

That fuel pump in the second pic is throwing me off, on the timing cover.

What the hell, Did you use a mirror to take these pics? or am I getting to old..

lol

Charles

Brewster · 12-14-2008, 09:37 AM

Your right about the mirror, its just like the heat shield which should be on the driver side and/or fuel pump side.
Weird how he switched the valve cover and the coolant neck but how did he do that with the intake manifold????? even the cables hanging from the stand are opposite!
Charles, what gives?????????

takid455 · 12-14-2008, 09:58 AM

I have magic powers

. I think that is a reverse negative because even the background is reverse. I took that picture with regular film and had them put on disk. I recall there being some 'backwards' photos on the disk. that is interesting though.

x-bird2 · 12-14-2008, 10:47 AM

yep, reverse negative, you can see it in the backwards letters on the intake. always loved the letters we'd get when one of those snuck into print in the magazine--usually was an interior shot of an "english" gto or firebird.

chuckies76ta · 12-14-2008, 12:48 PM

lolololol, I must have looked at those pics for an hour or more..lol Thanks for the explanation, takid455, x-bird2..

Just called my wife to look and still explain this to me as she is a Photo Lab Tech. She said the same as you guys. The negative was scanned upside down.. She still had to explain that process to me..before I got it.. Wow, sign of age...lol

Took one last look, Told my wife it still baffles me..

lol

chuckies76ta · 12-14-2008, 12:49 PM

Quote:

Originally Posted by Brewster

Your right about the mirror, its just like the heat shield which should be on the driver side and/or fuel pump side.
Weird how he switched the valve cover and the coolant neck but how did he do that with the intake manifold????? even the cables hanging from the stand are opposite!
Charles, what gives?????????

Thanks for your attempt Brewster..

Charles

SD73 · 12-14-2008, 01:43 PM

I thought this was an Austrailian SD???

chuckies76ta · 12-14-2008, 01:53 PM

Quote:

Originally Posted by SD73

I thought this was an Austrailian SD???

lol

Charles

x-bird2 · 12-14-2008, 03:11 PM

actually ta kid has the rarest of all SDs, the TWIN SD test Mule. those are the two SD engines (with one built to rotate the opposite direction) that were mounted side by side to balance the amount of torque hitting the mounts and keep it from flipping over on its side on launch.

Brewster · 12-14-2008, 03:25 PM

Wow!!!!!!!! now that would be something for my fishing boat

Brewster · 12-15-2008, 09:48 AM

Anyone have a four speed and know what the decal is on the EGR valve?????????
My auto is shown here and I thing its the same but at the nats Ricks Formula was there and Scott had put a MD decal which I've never seen before??????????

Brewster · 12-15-2008, 10:40 AM

http://cgi.ebay.com/ebaymotors/ws/eB...1123&viewitem=

Note this item, never seen one for sale let alone with the correct decal. Awesome part and someone should pick it up for there resto>.........................

SD73 · 12-15-2008, 11:10 AM

Quote:

Originally Posted by Brewster

Anyone have a four speed and know what the decal is on the EGR valve?????????
My auto is shown here and I thing its the same but at the nats Ricks Formula was there and Scott had put a MD decal which I've never seen before??????????

It was the same part number for either, so I wouldn't think there's a difference.

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