Conversion chart

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Conversion chart

Postby Remps » Mon Jan 04, 2010 3:28 am

I found a conversion chart for converting A/R to cm2 @ Rocky Mountain DSM.Dunno if it is right on the money or not. 6cm2=0.41A/R, 7 cm2=0.49A/R, 8cm2=0.57A/R, 9cm2=0.65A/R, 10cm2=0.73A/R, 11cm2=0.81A/R, 12cm2=0.89A/R, 13cm2=0.97A/R, 14cm2=1.05 A/R, 15cm2=1.13A/R,16cm2=1.21 A/R, 17cm2=1.29A/R, 18cm2=1.37A/R, 19cm2=1.45A/R.
'90 D250 R/C,727,IC,6x.009's,1/8" bump,fuel psi,straight pipe w/5" stack.
'90 W250 R/C,47rh,K@N,HX35,1/8" bump,2nd gen IC,boost,egt,trans temp.3.07's.
'96 2500 S/C L/B,2wd,NV5600,3.54 L/S,cai,egt,pacbrake,mbrp exhaust,10 plate.
Bring back the Bank of Canada, PRE- 1974.
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Postby Richie O » Mon Jan 04, 2010 2:01 pm

The conversion I got from a tech at borge warner for my S300G was that my .80ar is a 14.77 cm. Thats what he told me it was when I called him.
1989 W250 727, 3.07 L/S, S300, P/S Intercooler, Stans exaust, Pump adjustments, 127k miles,297 hp
1993 W250 extended cab, rag, 4.10 l/s, 6x16's, HTT 62/71/14 piston l/p, Isspro EV series tach, fuel pressure, boost, oil pres, water temp, volt, pryo, 132k/ 301 hp
1992 W250 with NV4500, 3.54's, 16cm 60mm GDS H1C, ground stock cone, Isspro tach, pryo, boost, fuel pressure, slow, rusty, dented,180k
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Postby Remps » Mon Jan 04, 2010 2:42 pm

Yes, the conversion that you got sounds more accurate. I wonder if there is a difference in the numbers for different turbos?
'90 D250 R/C,727,IC,6x.009's,1/8" bump,fuel psi,straight pipe w/5" stack.
'90 W250 R/C,47rh,K@N,HX35,1/8" bump,2nd gen IC,boost,egt,trans temp.3.07's.
'96 2500 S/C L/B,2wd,NV5600,3.54 L/S,cai,egt,pacbrake,mbrp exhaust,10 plate.
Bring back the Bank of Canada, PRE- 1974.
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Remps
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Postby DZL_Damon » Wed Jan 20, 2010 9:48 am

isn't aspect ratio (A/R) a ratio of the inducer to the exducer? Or is it the area of the inlet to the area of the outlet (Nozzle ring/ exhaust outlet).
-93 W350,CC, DRW, A518, Pump maxed, DDP3, DennyT, 4" DP, black muffler stack with flapper. HE351cw, CoolerTubz, PS I/C, 4601HP elec. fuel pump, 205k
-89 D250, clean utility bed, TF727, new IP, 76k
-09 VW TDI 2.0L CR, ~45mpg, 20k
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Postby Remps » Wed Jan 20, 2010 7:59 pm

I am pretty sure there are two different ways that they measure A/R. I just divide 14.77 by 8 (.80 A/R) which =1.84625=.10 A/R.So a 1.00 A/R housing would be 18.4625 cm.IDK for sure tho.
'90 D250 R/C,727,IC,6x.009's,1/8" bump,fuel psi,straight pipe w/5" stack.
'90 W250 R/C,47rh,K@N,HX35,1/8" bump,2nd gen IC,boost,egt,trans temp.3.07's.
'96 2500 S/C L/B,2wd,NV5600,3.54 L/S,cai,egt,pacbrake,mbrp exhaust,10 plate.
Bring back the Bank of Canada, PRE- 1974.
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Remps
14mm rotor
 
Posts: 1130
Joined: Sun May 03, 2009 12:57 am
Location: Saskatchewan
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