Harney's diatribe - rocker geometry to install & beyond

mharney · Post by **mharney** » Thu Jan 20, 2005 4:10 pm

Jake, there is only one dyno shop here in town and they only do big trucks.

However, I do have a wideband, so I can use that to get close.

My bench tuning was not too far off, looks like. It's smooth, right up from about 2000 to God knows what. I'm afraid to take it past about 5000 right now, until I run the crappy gas outta the tank. I had about a gallon of year old gas that got mixed with about three gallons of 91. When I get that out and get my Wideband hooked in, I will abuse it proper. I ran it hard and lugged it a little to seat the rings.

Right about 2500 I can feel it really come on. First and second gear would have me all over the road if I stay in it. Half throttle breaks it loose in first, and about 3/4 throttle in second. I have a feeling I need to adjust the linkage too, because I don't think I am getting the carbs fully open. I might just drill a hole further up the gas pedal arm.

As I get closer to 5000 rpm, it pulls harder and harder, until I am basically afraid to stay in it. I have not had the Kafer Cup Brace and the intermediate brace put in yet, so no real abuse until I do that. Feels like my torsion bushings are in good shape though.. when it breaks loose it just spins, no shudders at all. The copperhead disk is hardcore, but only if I want it to be.

I get 30-35 in first gear in no time. Freaky.

BTW the rods are 5.5.

Gotta get tags - 2 years outta date and outta state, and it is sure to attract a lot of attention. No need for Johnny Law to pay me a visit. Hell, maybe I'll just outrun him. lol.

purple69 · Post by **purple69** » Thu Jan 20, 2005 4:35 pm

sounds wicked dude!!

we all need to see a video of it though...

mharney · Post by **mharney** » Thu Jan 20, 2005 6:55 pm

Video forthcoming. The problem is holding on and shifting and filming. If it were a stocker or close then it would be no problem (but then, who wants to see that?), but as fast as it ramps, there is no way I am going to free up a hand to film. I gotta mount it or get someone to hold on to it.

MASSIVE TYPE IV · Post by **MASSIVE TYPE IV** » Thu Jan 20, 2005 7:00 pm

Duct tape it on top of the car.. Thats what we did in our Videos!!

mharney · Post by **mharney** » Thu Jan 20, 2005 7:32 pm

LOL! That is not Jake-like. I would expect a custom fabbed fixture outta you.

purple69 · Post by **purple69** » Thu Jan 20, 2005 7:41 pm

haha. i was gonna say duct tape it to the passenger seat or the roof

i wanna see the out of car action too though. gotta get the Mrs. to hold the video camera while you peel out

mharney · Post by **mharney** » Thu Jan 20, 2005 7:45 pm

I have a tripod I can use for that, but no major burnouts until I get the thing tuned right, and get the Kafer Cup Brace and intermediate mount installed. The little wimpy a$$ bugpack bolt-on middle brace I used on my previous engine ain't gonna cut it. It's flexing already.

Incidentally, I have hard rubber mounts. Are they up to the task or do I need to consider a strap or other mounts? The intermediate mount is a Rocky Jennings item, with weld on rubber saddles. The center piece has to mount to the transmission like a Berg does.

Post by **sparkmaster1** » Thu Jan 20, 2005 8:27 pm

How about duct taping the camera to your head??

It will only hurt when you take it off!! Good to hear you have it running and driving. Tim

64 variant · Post by **64 variant** » Thu Jan 20, 2005 8:52 pm

With 11,000 views this engine better scream!

MASSIVE TYPE IV · Post by **MASSIVE TYPE IV** » Thu Jan 20, 2005 9:04 pm

Hey mharney, can you send me the pic of the engine all finished for my site??? The DTM looks good against that red surrounding..

Also, how is my balance work??? Is she smooth as glass??

That thing balanced nice and **tight**!

mharney · Post by **mharney** » Thu Jan 20, 2005 11:47 pm

MASSIVE TYPE IV wrote:Hey mharney, can you send me the pic of the engine all finished for my site??? The DTM looks good against that red surrounding..

Also, how is my balance work??? Is she smooth as glass??

That thing balanced nice and **tight**!

This is not really finished.. it's still rough, but you get the idea. I need a better way to do the springs or I might have to get some of those linkage springs airkewled sells. The wiring could be better, but this is no show car. Decklid may not fit without standoffs. We'll see tomorrow.

Yes, Jake the balance is SWEET. It is so smooth I can't feel any vibration. Let me get it cleaned up better and get a better shot before you publish.

Can't wait for tomorrow so I can go out and give it more hell.

MASSIVE TYPE IV · Post by **MASSIVE TYPE IV** » Fri Jan 21, 2005 12:17 am

Glad to hear that! I knew that sucker would be smooth, but damn it took some whittling on the balancer!

Think about a larger capacity breather box... Those suckers like you have fill up fast and don't do much good at high RPM...

I love the one that CSP sells... Its a 1.8L stainless unit that fits sweetly with the DTM..

Chris Percival · Post by **Chris Percival** » Fri Jan 21, 2005 8:42 am

MASSIVE TYPE IV wrote:I love the one that CSP sells... Its a 1.8L stainless unit that fits sweetly with the DTM..

Thats what I have..

Great read by the way, I have just gone through a similar experience, building my engine. Its a long hard road, but boy is it ever worth it!

dstar · Post by **dstar** » Fri Jan 21, 2005 9:12 am

YEA, the CSP one will cover up more of that rust you painted over......

BUWAHAHAHAHAHAHAHAHAHAHA!

Don

mharney · Post by **mharney** » Fri Jan 21, 2005 9:29 am

That's not rust.. its some sort of crap over the metal.

There's virtually NO rust on this car. The pan is PRIMO.