Author Topic: starters and crank rpm  (Read 8405 times)

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Offline dsrace

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Re: starters and crank rpm
« Reply #30 on: December 07, 2017, 06:09:35 PM »
a guess would be that it would work. i currently have aluminum greasers that are spacers. i believe there 7/16" and the non plunge cv's are narrower than plunging btw, not by much though. i could get doug to make a slightly wider greaser/spacer and min it i suppose. changing the rear trans mount is no big deal but don't know the location of the cv flange in relation to adapter plate.
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Offline dsrace

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Re: starters and crank rpm
« Reply #31 on: December 17, 2017, 09:25:59 AM »
That's the trouble with turbo motors. Run a comp test and post it up when you can. If you have cam specs ,post those as well if you wish.

found these stock cam specs for comparison. it's interesting none the less, and you understand this far better than i do.

1987 Turbo Coupe cam spec.s: slider

Cam Lift (Intake):.238"
Cam Lift (Exhaust):.238"
Valve Lift (Intake):.412"
Valve Lift (Exhaust):.412"
Degrees Overlap:28 Deg
Advertised Duration (Intake):248 Deg
Advertised Duration (Exhaust):250 Deg
Duration at .050" Lobe Lift (Intake):187 Deg
Duration at .050" Lobe Lift (Exhaust):189 Deg
Cam Timing at .050" Lobe Lift (Intake Open):23 Deg After Top Center
Cam Timing at .050" Lobe Lift (Exhaust Open):39 Deg Before Bottom Center
Cam Timing at .050" Lobe Lift (Intake Close):30 Deg After Bottom Center
Cam Timing at .050" Lobe Lift (Exhaust Close):30 Deg Before Top Center
Valve Lash (Intake):Hydraulic
Valve Lash (Exhaust):Hydraulic
Lobe Centerline (Intake):108 Deg
Lobe Centerline (Exhaust):116 Deg





1989-1994 2.3L Roller Cam Engines

    Lobe Lift
        Intake 0.2381"
        Exhaust 0.2381"
    Rocker arm (cam follower) ratio 1.64:1
    Theoretical Valve Lift @ Zero Lash
        Intake 0.390"
        Exhaust 0.390"
    Valve stem 0.3419" dia

        Valve stem 0.2750" dia

Stock Roller Camshaft Pattern

Lobe Center Separation: 112 deg
Intake @ 0.050:
- Open: 14.5 deg BTDC
- Centerline: 108 deg
- Closed: 21.5 ABDC
- Duration: 187 deg

Intake @ 0.00  lift:
- Duration: 248 deg
- Lift: 0.390"

Exhaust @ 0.050:
- Open: 30.5 deg BBDC
- Centerline: 116 deg
- Closed: 21.5 ATDC
- Duration: 189 deg

Exhaust @ 0.00  lift:
- Duration: 250 deg
- Lift: 0.390"

I plugged the .050" info from the roller Cam specs above into this Camshaft Calculator http://www.wallaceracing.com/camcalc.php  and this the output:
The Ranger Roller Cam has an Overlap of 36.00 degrees and has in Intake Duration of 216.00 degrees. The Exhaust Duration is 232.00 degrees. The Inlet Cam has an Installed Centerline of 93.50 degrees ATDC. The exhaust cam has an Installed Centerline of 94.50 degrees BTDC.
« Last Edit: December 17, 2017, 09:35:30 AM by dsrace »
Don't never argue with an Idiot!
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Offline dsrace

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Re: starters and crank rpm
« Reply #32 on: December 17, 2017, 10:38:01 AM »
Don't never argue with an Idiot!
Because he will drag you down to his level and beat you with experience

 

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