High Stall Torque converter
Discussion
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
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
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
https://www.youtube.com/watch?v=tfoCE1QQKVo
Pete
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.https://www.youtube.com/watch?v=tfoCE1QQKVo
Pete
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.https://www.youtube.com/watch?v=tfoCE1QQKVo
Pete
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
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.https://www.youtube.com/watch?v=tfoCE1QQKVo
Pete
Edited by MyM8V8 on Thursday 8th December 07:43
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.
I use HP Tuners Pro so you should invest in it along with a wideband. Best investment you can make on a modified car.Edited by MyM8V8 on Thursday 8th December 07:43
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
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
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.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
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.
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.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.
Edited by stevieturbo on Thursday 8th December 18:22
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.
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
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.
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