Circle D Turbo Converter
Thread Starter
Joined: Aug 2007
Posts: 24,241
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From: Turnin' Wrenches Infractions: 005
Circle D Turbo Converter We always talk about which converter is best, well this is my most recent purchase.
Here's a link to it:
http://www.circledspecialties.com/p-...converter.aspx
Chris at circle D spec'd this one to foot brake to around 3500 and should give a nice hard launch for use without a transbrake since I dont have one. When ask for more clarity, here was his response:
It has the D stator
It has dual x6 patterns, so it works with virtually any flexplate.
Here's a link to it:
http://www.circledspecialties.com/p-...converter.aspx
Chris at circle D spec'd this one to foot brake to around 3500 and should give a nice hard launch for use without a transbrake since I dont have one. When ask for more clarity, here was his response:
Originally Posted by Circle-D
There are 3 common stators for the 258mm core. We assign each of them letters. A, B, and C. We generally use the "A" stator in our bigger cube turbo builds or nitrous builds. It's the tightest of the bunch. The "B" stator has been our go-to for most turbo setups as it has a nice footbrake down low for spooling. The "C" stator is one we generally reserve for PD blown applications.
The "D" stator is a modified "C" stator. We throw it in our CNC and machine the fins for max effort footbrake turbo cars. It works great because of it's high fin count (21) and our custom angles made available by the CNC. It's not on our website, but we have been using it for a while now with great results. It's all a bit confusing, but it's kind of meant to be:
The "D" stator is a modified "C" stator. We throw it in our CNC and machine the fins for max effort footbrake turbo cars. It works great because of it's high fin count (21) and our custom angles made available by the CNC. It's not on our website, but we have been using it for a while now with great results. It's all a bit confusing, but it's kind of meant to be:
It has dual x6 patterns, so it works with virtually any flexplate.
Love my circle d but go ahead and order a sonnax line to lube valve. It's a pretty common issue with the triple disc 4l80e converters. Do some research and you'll see what I'm talking about. It's a cheap part but without it the lock up clutches will drag at idle and lug the motor down when in gear. It's really f-ing annoying
TECH Enthusiast
Joined: Sep 2016
Posts: 518
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From: North Jersey
I did the line to lube with my triple. I thought it was dragging. My trans guy that put it in for me said everything looked good in the fluid.
When I sent my converter back to have it loosened up they confirmed what my trans guy said.
Clutches looked good.
My issue was with reverse only. I wound up lowering the rev boost pressure to zero on my compushift controller and it seems to have done it.
BTW, it would only do it when it was cold.
Warm it was fine.
When I sent my converter back to have it loosened up they confirmed what my trans guy said.
Clutches looked good.
My issue was with reverse only. I wound up lowering the rev boost pressure to zero on my compushift controller and it seems to have done it.
BTW, it would only do it when it was cold.
Warm it was fine.
