SCCA ST165 finally begins

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Re: SCCA ST165 finally begins

Postby eric thompson » Fri Nov 10, 2017 5:04 pm

Was back on the Dyno Wednesday since it only had about an hour of Dyno time before Indy, I wanted to see what the new motor spec could put down...
11:1 Compression, 290/274 cams, Billet Supra CT26A but stock wheel size of 46mm, P&P cyl head and port matching much improved over first build...
STU 35mm restrictor - 275whp/330wtq
T1 46mm restrictor - 399whp/340wtq

Not too shabby for basically stock CT26, shit log Gen1 manifold, and nothing too special built 2.0 motor... ImageImage

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ST165-PARTS-RED
ST165-SCCA STU ROADRACING-(RALLISPEC'S ST165)
NEED ONE MORE FOR STREET:)
https://www.youtube.com/watch?v=w-RCuV_Hmqk (ITS miata 6spd,4.78 rear, shitloads of fun!! multiple wins and track records in 2014)
eric thompson
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Location: siny - 10304 / nj 07747

Re: SCCA ST165 finally begins

Postby GT4_DRED » Mon Feb 05, 2018 8:32 pm

Really liking the torque curve with the restrictor. Are you running the Quaife unit(s) yet?
Image
'00 SC300 - "The long way home" daily driver
'88 ST165 - project "Rahtid"
'88 ST165 - Project "Supah Cyat"
'91 MR2
'93 Corrado SLC - "Purple Haze"
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GT4_DRED
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Re: SCCA ST165 finally begins

Postby eric thompson » Mon Feb 05, 2018 8:37 pm

GT4_DRED wrote:Really liking the torque curve with the restrictor. Are you running the Quaife unit(s) yet?
Not yet. The KAAZ has held up well. The real mental block I'm having with running the Quaife is retaining the factory VC... The only solution I can come up with is to lock the VC somehow to full-time 50/50 split and let the front and rear diffs do their jobs.
I'm open to suggestions and/or solutions

Sent from my XT1650 using Tapatalk
ST165-PARTS-RED
ST165-SCCA STU ROADRACING-(RALLISPEC'S ST165)
NEED ONE MORE FOR STREET:)
https://www.youtube.com/watch?v=w-RCuV_Hmqk (ITS miata 6spd,4.78 rear, shitloads of fun!! multiple wins and track records in 2014)
eric thompson
Club Member
 
Posts: 508
Images: 6
Joined: Wed Sep 15, 2004 9:06 pm
Location: siny - 10304 / nj 07747

Re: SCCA ST165 finally begins

Postby GT4_DRED » Tue Feb 06, 2018 5:49 pm

eric thompson wrote:
GT4_DRED wrote:Really liking the torque curve with the restrictor. Are you running the Quaife unit(s) yet?
Not yet. The KAAZ has held up well. The real mental block I'm having with running the Quaife is retaining the factory VC... The only solution I can come up with is to lock the VC somehow to full-time 50/50 split and let the front and rear diffs do their jobs.
I'm open to suggestions and/or solutions


I just picked up a quaife unit myself and I'm now in the same boat. I'm contemplating either rebuilding the vc to a higher torque rating, locking the vc (jbweld) or doing a spool to remove the vc altogether. No real-world experience at this point, but jbwelding the vc has been done before, but I don't think those cars ran on a road course. I'm also looking to swap out the rear torsen diff to something more reliable, so looking at my options at this point. On that note, I'm not sure which of the three (1, 1.5, or 2 way) would better help to get the rear to rotate?

As a note, I was looking at this a few months back, as a much cheaper solution to the quaife. Agile Performance
Image
'00 SC300 - "The long way home" daily driver
'88 ST165 - project "Rahtid"
'88 ST165 - Project "Supah Cyat"
'91 MR2
'93 Corrado SLC - "Purple Haze"
User avatar
GT4_DRED
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Posts: 425
Images: 0
Joined: Sun Apr 08, 2007 10:02 pm
Location: North GA.

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