TBucket 200-4R Transmission Project

[Indycars]

the magnets RICK linked too have a max operation temp of 302F
which is higher than your oil temp should ever get even close too.

I hope you are right !

Even the HDD magnets (Horseshoe shaped) seem to be right at home collecting just as much
metal as the high temp magnets.

 

[Unforgiven]

Wow that was scary, hard to test shift points at WOT when the car wants to
go sideways when it shifts into 2nd and 3rd.[/QUOTE

Careful Rick.....Your showing your AGE!

 

[Indycars]

"Careful Rick.....Your showing your AGE!"

I'm like a fine Whiskey, I just get better with age !

 

[Indycars]

I ordered some springs from McMaster-Carr that were considerably stronger than the previous
ones used above. The springs had a free length were 0.75"(stock was 0.8"), but the wire diameter
was .022" and .026". The stock spring wire diameter was .012" and the one from my inventory
was .017". They new springs had a rate of 5.6 and 10.0 lbs/in.

The only springs I could find that had the dimensions that might work were Mil-Spec, so I had
to pay $45 for ten springs. Five each of the two different dimensions, shown below.

https://www.mcmaster.com/springs/mil-spec-compression-springs/od~0-24/length~3-4-2/

I've have not found anyone that has calibrated their 200-4R governor using springs only, but
going outside the box is one way of learning something new.

Before I installed the heavier of the two springs (10.0 lbs/in), I painted both for identification
purposes. Just trying to pull away from the house it felt like I didn't have enough fluid in the
trans and was slipping alot, but it was because it was taking off in 4th gear. When I pulled it
down into manual 1st gear it was alot better. Obviously these springs (10.0 lbs/in) were much
too heavy for what I wanted. Next I will try the the 5.6 lbs/in springs, but I'm doubtful that they
will be what I need either.

I only have two complete governors, one stock and one from CK Performance and the NTBA Nationals
are coming up in a couple of weeks. I was hoping that I could do the governor calibration by only
changing springs. But its starting to look like I will need to do some grinding on the weights. I hate to
do that right now since the stock governor works just fine for cruising. It's only lacking when I want to
go fast and trying to shift manually while keeping the car going straight is very difficult. Best done
with two hands on the steering wheel!!!

OK it looks like it's time to drain the fluid and pull the pan again, later !

 

[Unforgiven]

It's only lacking when I want to
go fast and trying to shift manually while keeping the car going straight is very difficult. Best done
with two hands on the steering wheel!!!

I think you need to upgrade your shifter....

https://www.hotrod.com/articles/powertrain-control-solutions-paddle-shifters-kit/

 

[Grumpy]

I wonder if it could be used to install a 4l80e without the factory controller?

 

[Unforgiven]

I believe it is a stand alone system...The wireless paddle shifter is a $500 option added to the already $1100 stand alone.
I read the PDF on the stand alone.. They were putting it on a 4L80 trans in the instructions.

BUT!!!!!! It sure would be a hell of alot of fun to paddle shift like an Indy car !!!

 

[Unforgiven]

Rick.. Have you talked to CPT transmissions (Art Carr) ? They have a custom line of parts for the 200-4R trans.

 

[Indycars]

I think you need to upgrade your shifter....

I looked at your link, the size of that control box plus the price is enough to scare me away.

Rick.. Have you talked to CPT transmissions (Art Carr) ? They have a custom line of parts for the 200-4R trans.

I am aware of them, but have not talked to them. I hate to take up someones time when I'm
probably not going to buy much. I bought most my parts from CK Performance. I tried to
get some help from CK but it's very hard to get a hold of him to have a conversation. So I've
decided to go it alone.

 

[Unforgiven]

I hate to take up someones time when I'm
probably not going to buy much.

I live by the same values Rick!

When I built my TH400 last summer... I bought ALOT of stuff thru CK Performance. about $1800 worth.
After the 4th time rebuilding it.. because of high line pressures and instantly blowing lip seals, I called on my
Monster Truck Circuit friend and he rebuilt it for me... My problem was that one of the aftermarket drums was
not machined properly... long story ... but he fixed it in front of me.. With all the billet parts and 300m shafts, he said it would hold more than I will ever throw at it...

 

[Indycars]

Were you able to get a hold of CK during your build ?

I think he made a name for himself which brought alot more customers, but now he is just
too busy. He is the only person there that can answer questions. Back in 2013 when I was
building my trans I was able to talk with him several times.

 

[Unforgiven]

Nope.. I did not get to talk to anyone...I did talk to a guy down in Texas though...Jake.

I had bought a few things from him also....He could not help me with the problem because everything was checking good..

What was happening was : I checked my clutch pack clearances and was getting .050 between the clutches and pressure ring.

But when I installed the trans and shifted it into gear....it would blow the piston out and tear the lip seal..
I had pressures upwards of 500 which is way out of spec.. After the third failed attempt...Coty came over and we rebuilt it again
only to have it do the same thing......That's when Coty called up Corry... He found that the clutch packs where not seating all the way down
during assembly. He had to chuck it up in a lathe and bore out a small amount to allow the clutches to seat down...This explained why I could not get the extra clutch to fit before!... He added the extra clutch, and also installed a different pressure valve in the pump cause for some reason he did not like the
aftermarket one I had.. That fixed all the high line pressures... Trans has been working Alot better than the engine so far..

 

[Loves302Chevy]

Rick, does the 200-4R and the 700R4 use the same governor?
If so, you will want to start with a Corvette governor, and fine tune from there.
Those that have tried to get proper shift points using a low rpm governor and a recalibration kit have had disappointing results.

 

[Unforgiven]

Whats up Mike! I haven't heard from you in awhile...
We can talk on my chevelle thread so we don't hi-jack Rick's thread.

 

[Indycars]

Rick, does the 200-4R and the 700R4 use the same governor?

No I don't think so. With the 700 you don't have to pull the pan, just pull a cover and you are there.

If so, you will want to start with a Corvette governor, and fine tune from there.

I have a governor from a Turbo Buick and that shifts too high at WOT and almost doesn't shift at part throttle.

 

[Loves302Chevy]

I have a governor from a Turbo Buick and that shifts too high at WOT and almost doesn't shift at part throttle.

Well then, you have your answer. Somewhere between those two governors is the perfect setting for your T-Bucket.
Like a giant slab of marble, you just have to remove what's not needed to reveal the masterpiece that lies within. Get to work.

 

[Indycars]

Well then, you have your answer. Somewhere between those two governors is the perfect setting for your T-Bucket.

When I get back from the Nationals, then I can try sneaking up on the right governor
weights. Right now I don't want to make a mistake by removing too much weight.

 

[Loves302Chevy]

I gotta give you credit Rick. Years ago I took a ride in a friend's Jeep with no doors. What a weird feeling. It looks easy when someone else makes a 1/4 mile drag run with no windshield in front of them. If I actually tried it, my underwear would probably turn from white to brown.

 

[Unforgiven]

that's the pic i need Rick....front view , you in the seat with helment and goggles , both hands on steering wheel!

 

[Indycars]

I gotta give you credit Rick. Years ago I took a ride in a friend's Jeep with no doors. What a weird feeling. It looks easy when someone else makes a 1/4 mile drag run with no windshield in front of them. If I actually tried it, my underwear would probably turn from white to brown.

I appreciate the nice comment ! Thanks !