Barn motor ideas...

[Scoobum]

If I was gonna run a LU convertor,..it'd be a Vig multidisc. Norbs ran a 2800 Vig multidisc on his low ten 134 mph blast. Slip rate checked in at 3 percent. The only thing he mentioned about it is that it sounded like a bunch of marbles rattling around in it at idle. I'll assume the clutch plates were hitting together.

[larrym]

You cruise much with that Art Carr Brad?
My car spends a lot of time on the hwy wonder how much warmer the tranny would get with a NLU

[Steve Wood]

the clutches rattle in the vig-the five disc version is the worst.  The only thing I don't like about them is that they lock and unlock with emphasis when they lock up or unlock in normal driving.

The nlu units are not worse than converters in the before lock up days when it comes to heat....an external cooler is all the insurance you need.

[Scoobum]

This year will be the first in 3 years for the car to see the street...and I can't wait. I cruised it all over hells half acre with the AC convertor...an d the trans temp gauge never showed it running warm. I'm not advocating NL convertors...i t's just what works best for me.

[Scoobum]

Almost forgot Larry. I run a huge trans cooler.

[good2win22]

Here's the cam card of the cam that I'm hoping to get from charlie. Springs that are currently on the TA heads have a closed pressure of 140 and open pressure of 355, will it be enough or is it too much?
If not and just for GP, how do you calculate for spring pressure?

[Steve Wood]

I suspect the springs are right about right for that much lift. I would go to the Comp site, look up the cam and see what Springs they suggest with the cam.  Then compare them with yours

[good2win22]

Did a little research and found a site explaining how to measure for spring bind but nothing for how to calculate for spring rates.  Been to the comp site Steve and this cam is no where to be found.  Going to give them a call tomorrow to see what they have to say.

[Charlief1]

It's a custom Jason. Bring me $225 and take it home tomorrow. Someone got hold of my card and have screwed up my account. Fighting with the bank right now as well as mastercard over it.

[earlbrown]

Spring rate is pounds per inch.    If you measure the spring pressure at a certain point, then compress it another inch, the additional reading is the rate.

Normally there's not enough room to move an inch. In that case, you add 1/2" and double the extra poundage.


Basically if you have a 300 pound per inch spring that's 125 closed....    then open it 1/2" you'll have 125 + 150 for a total of 275 over the nose.

[good2win22]

Thanks Earl. 
 
I guess I should ask the question another way.  How do you calculate for the springs closed pressure to keep it from bouncing off the seat? I don't believe that the cam would have anything to do with this calculation but would come into play when considering the amount of total lift.
 
From the spec sheet on the TA heads, I've done some calculating for the installed springs as follows:
 
Cam max lift:           INT .548  Exh .544
Spring installed height:  1.855
Compressed spring height with cam max lift:  INT 1.307  Exh 1.311
Spring coil bind height:  1.035 
Net safety margin before binding:  INT .272  Exh .276
What I don't know is what ratio rocker was used when comp came up with these specs.  I guess the thing to do anyway would be to clay up the piston and  throw the heads on without a gasket and see if the valves clear the piston.

[v6sleeper]

If I was gonna run a LU convertor,..it'd be a Vig multidisc. Norbs ran a 2800 Vig multidisc on his low ten 134 mph blast. Slip rate checked in at 3 percent. The only thing he mentioned about it is that it sounded like a bunch of marbles rattling around in it at idle. I'll assume the clutch plates were hitting together.

I can attest to the Marbles...I cant tell you how many times I stopped and looked under my car and said WTF is that!! lol

[TexasT]

.  I guess the thing to do anyway would be to clay up the piston and  throw the heads on without a gasket and see if the valves clear the piston.

I think you should do that anyway, especially when using non stock parts. For the little time it takes it can sure save a catastrofic problem.

[Scoobum]

Jason...when you figure out what convertor yer' gonna use...talk to Bison about exhaust size for that 6262. With this 16930, I'd recommend a .63 Garret if you're mostly street driving for quick spool/driveability. Personally I like the .63 Precision...as I like a little lag for the street. I don't like the idea of jumping on the loud pedal and the car getting out from under me. Everyone has their preference.

[good2win22]

On the white T, I tried both the garret and precision .63.  I had a TE44 and preferred the precision over the garret with that coverter from Jake.  That garret spooled that the 44 like nobody's business and I found myself babying the car when street driving.  That's just me though....