PdV data/blog/news

Ryan McGuinness

Engine bay temps and your intercooler piping

It seems there are plenty out there operating under the assumption that engine bay temps are very hot compared to compressor outlet temps and therefore, insulating your intercooler piping is a good idea.  This blog will be short since math is hard to dispute. First question:  How hot does it get under the hood? Feel free to peruse this research paper on the underhood temps of several vehicles in several scenarios but I’ll summarize. Idle @ 1000RPMs – 75C/167F (no convective heat transfer!) Flat road at 60MPH – 30C/86F Hill at 70MPH – 65C/149F   Second question: How hot does the...

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Ryan McGuinness

What is with the name???

P·dv is the work necessary to compress a substance (i.e., reduce its volume). P·dv work is calculated based on a simple transformation of the F·ds work equation recognizing that Force = Pressure x Area (i.e., F = PA) and Volume = Area x Distance (i.e., V = As)   Often this equation is written in terms of specific work and specific volume, where the above equation is divided by the mass of the substance. Like the integral of F·ds, the area under the P-V curve represents the work. Courtesy of Wiley.com   Initially, I was going to develop parts that...

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Ryan McGuinness

5spd GT vs. 6spd MT Collar Gears

5spd GT Part # 9495034 (45 teeth on angle gear end/53 teeth on trans end) 6spd MT Part # 31256008 (45 teeth on each end)   As per the above mentioned angle gear compatibility list, the angle gear side of both collars are identical in diameter and tooth count.  The transmission side is of course drastically different and the GT collar is actually thinner than the angle gear side.         

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Ryan McGuinness

Angle Gear (Transfer Case) Compatibility

PART # 36000340   5spd Auto and 6spd Manual 2003-2009 S60 & S60R 2003-2007 V70, V70R, XC70, & XC90 2.5L 2003-2006 XC90 2.4T (diesel) 2001-2006 S80   PART # 36000343 6spd Auto 2006-2007 S60R/V70R   *Always verify the correct part number with your Volvo dealer*6spd Auto

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