High Stall Torque converter

[plastic orange]

I'm considering fitting a Circle D 3600 stall converter to my 98 Camaro engined Morris Minor, but understand i'd need it mapped afterwards. As I stay in Scotland, there is no one here who has experience with the 98 pcm, so who would folk recommend. I'm after better 60 foot times as I just can't get better than a 1.9 and 12.2 @ 116 quarters and a high stall converter would lose me up to .8 second.
Fitting would be a pain as it's an engine and box out from a tight space, so don't want to start the process without some information.

Cheers

Pete

[ARAF]

Message Ringram. He's the European distributor of EFILive and though he is probably a little far away to help you, I'm sure he will know who is in your area that can help.

[stevieturbo]

As people have suggested in other threads, perhaps remote tuning from one of the Yanks might be an option.

They would certainly have more experience with both the ecu systems and autos etc than anyone here will have.

Pat G gets a mention a few times here.

[plastic orange]

Cheers Stevie, Pat G gets a mention on the LS tech forum, so I'll explore that option.

Pete

[MyM8V8]

Have you tried using drag radials?

Whats the diff ratio?

[stevieturbo]

MyM8V8 said:

Have you tried using drag radials?

Whats the diff ratio?

He's also racing at Crail....just an airfield, so not a great surface.

[plastic orange]

I've Mickey Thompson sportsman s/r's 12 x 26 x 15's on a Ford 9 inch with 3.1 - 1 ratio and tru track diff - I know it's very tall geared as it's only hitting 4500 revs in third through the traps. It does hook very well though.

https://www.youtube.com/watch?v=tfoCE1QQKVo

Pete

[minime68]

plastic orange said:

I've Mickey Thompson sportsman s/r's 12 x 26 x 15's on a Ford 9 inch with 3.1 - 1 ratio and tru track diff - I know it's very tall geared as it's only hitting 4500 revs in third through the traps. It does hook very well though.

https://www.youtube.com/watch?v=tfoCE1QQKVo

Pete

Give the drag radials a try....they hook much better even on the street. Same goes for Pat G, stand up guy and knows his stuff.

[MyM8V8]

plastic orange said:

I've Mickey Thompson sportsman s/r's 12 x 26 x 15's on a Ford 9 inch with 3.1 - 1 ratio and tru track diff - I know it's very tall geared as it's only hitting 4500 revs in third through the traps. It does hook very well though.

https://www.youtube.com/watch?v=tfoCE1QQKVo

Pete

3.1's are a bit high. Your gear ratios are: 3.059 1.625 1.000 0.696. What cam are you running? I reckon you need to be nearer 6000 as you trap in 3rd.

I'd be looking at a set of diff gears to get you up there. Over 4 anyway.

Dont order the stall until you know where you need to be with the cam. I'm thinking you may need to be 4200 at least.

Edited by MyM8V8 on Thursday 8th December 07:40

[MyM8V8]

minime68 said:

plastic orange said:

I've Mickey Thompson sportsman s/r's 12 x 26 x 15's on a Ford 9 inch with 3.1 - 1 ratio and tru track diff - I know it's very tall geared as it's only hitting 4500 revs in third through the traps. It does hook very well though.

https://www.youtube.com/watch?v=tfoCE1QQKVo

Pete

Give the drag radials a try....they hook much better even on the street. Same goes for Pat G, stand up guy and knows his stuff.

+1. Ive used Pat G. Top man. But you will need someone with Efilive or similar to get your tune out and email it to him. He then sends the updated file back and it will need to be flashed in.

Edited by MyM8V8 on Thursday 8th December 07:43

[minime68]

MyM8V8 said:

+1. Ive used Pat G. Top man. But you will need someone with Efilive or similar to get your tune out and email it to him. He then sends the updated file back and it will need to be flashed in.

Edited by MyM8V8 on Thursday 8th December 07:43

I use HP Tuners Pro so you should invest in it along with a wideband. Best investment you can make on a modified car.

[plastic orange]

Cheers folks, I'll look into the options mentioned. However, I really only want to get into the 11's as anything quicker may compromise things on the road as car has a very short wheelbase. As it is, there is minimal wheelspin when I leave the line (from idle) - it just hooks and goes. Engine is completely stock from a 98 Camaro, with no cats, no air con or power steering and egr deleted (removed). I've done around 5000 miles this year to various events, and car needs to be road friendly too. Cruising at 70 is very relaxing at 2000 revs - it's all a compromise.
A guy in a VX8R raced me at Crail and was a bit full of it at the start, but rather sheepish at the end - his wife was in hysterics - he's off to buy a supercharger now.

Pete

[stevieturbo]

Taking things a different route....

A larger engine could also be another alternative, and never any downsides to how they drive etc. More power rarely makes you go slower, and would also help launching even if the converter is a bit tighter ?

[MyM8V8]

plastic orange said:

Cheers folks, I'll look into the options mentioned. However, I really only want to get into the 11's as anything quicker may compromise things on the road as car has a very short wheelbase. As it is, there is minimal wheelspin when I leave the line (from idle) - it just hooks and goes. Engine is completely stock from a 98 Camaro, with no cats, no air con or power steering and egr deleted (removed). I've done around 5000 miles this year to various events, and car needs to be road friendly too. Cruising at 70 is very relaxing at 2000 revs - it's all a compromise.
A guy in a VX8R raced me at Crail and was a bit full of it at the start, but rather sheepish at the end - his wife was in hysterics - he's off to buy a supercharger now.

Pete

My old ute had a small cammed LS2, stock 4L65E, CircleD 4200 stall, fast intake, LT headers,CAIOTR, 3.46 final drive and tru trac. Same gear ratios as you, but lower diff. With MT 235 45 15's I made a sixty ft of 1.57 and ET of 11.6. If I recall I was trapping at about 5500 in 3rd.

Really for the sake of some gears you should be there already. Your drive off the line could actually be bogging given your sixty foot.

[stevieturbo]

MyM8V8 said:

My old ute had a small cammed LS2, stock 4L65E, CircleD 4200 stall, fast intake, LT headers,CAIOTR, 3.46 final drive and tru trac. Same gear ratios as you, but lower diff. With MT 235 45 15's I made a sixty ft of 1.57 and ET of 11.6. If I recall I was trapping at about 5500 in 3rd.

Really for the sake of some gears you should be there already. Your drive off the line could actually be bogging given your sixty foot.

For launch comparisons....Crail is like an average normal road surface. It's decent condition ok, just slippy and a little uneven.

Edited by stevieturbo on Thursday 8th December 18:22

[ArnieVXR]

Sounds a bit like York where rear drive cars struggle even on drag radials. I don't much enjoy driving a high stall converter, it's very all or nothing. Fine for the strip, joyless on the road.

[MyM8V8]

ArnieVXR said:

I don't much enjoy driving a high stall converter, it's very all or nothing. Fine for the strip, joyless on the road.

That's all well and good but the OP has set a clear goal and that will require compromise.

[ArnieVXR]

Good point Gareth. I was just pointing out one downside of a high stall converter, especially as it gets proper road use. I'd be looking at a whiff of gas to pull the car into the elevens. Cheaper and easier to fit. Guess you'd need to be sure about the gearbox and converter if you add more power though.

[plastic orange]

ArnieVXR said:

Good point Gareth. I was just pointing out one downside of a high stall converter, especially as it gets proper road use. I'd be looking at a whiff of gas to pull the car into the elevens. Cheaper and easier to fit. Guess you'd need to be sure about the gearbox and converter if you add more power though.

Your point about high stall converters was what I initially thought about them, but having read up on them on American sites they seem to like them. However, I've never experienced one myself, so it's good to have an opinion from experience. Plenty food for thought though,as my car drives really nice as it is and I'd not want to alter it too much as it is still a relatively quick car as is.

Cheers

Pete

[stevieturbo]

ArnieVXR said:

Sounds a bit like York where rear drive cars struggle even on drag radials. I don't much enjoy driving a high stall converter, it's very all or nothing. Fine for the strip, joyless on the road.

I've never raced at York, but looking at pictures etc of the surface there, it looks a lot better than Crail.

Crail, just like airfields here is just literally like normal asphalt/tarmac you would find on any 20+ year old road. And Despite Crail seeing regular use it doesnt really have a coating of rubber down like some venues might get at the start area.