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WA Spotted & Chit Chat Thread

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May be a stupid question, but would anyone be able to answer if I am able to use the derived engine rpm that lies under the Axle Speed in your Dyno graph for my own. I.E is this effected by gearbox and diff ratio?  Unfortunately my graph doesn't have this engine rpm displace.  At first glance it looks like it would work...

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Here is manual 6 speed (Nizpro F6. BF) with 3.73.  98 fuel, modified turbine housing for lazy boost. 400rwkw with 15PSI boost..

 

Use this for comparison.

 

X1hngqX.jpg

 

66cdf325fc89fb12763e2f19fab36f6d.jpg

Edited by arronm

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On 27/06/2018 at 12:38 PM, Boosturd said:

May be a stupid question, but would anyone be able to answer if I am able to use the derived engine rpm that lies under the Axle Speed in your Dyno graph for my own. I.E is this effected by gearbox and diff ratio?  Unfortunately my graph doesn't have this engine rpm displace.  At first glance it looks like it would work...

 

Yeah it’s affected by diff, gearbox ratio and slip. Even locked up the ZF has 2% slip.  So it’s not accurate like you can calculate with a manual in 1:1 ratio. Find ZF graphs of the same gear (Ie 4th)and then divide the derived rpm by axle rpm and then average this for different rpm values above 4000rpm. Use this ratio for your own car.

 

so say your axle rpm is 1400 and your conversion ratio from other graphs is 3.1 then the engine rpm is approximately 1400x3.1=4340

Edited by IH8TOADS

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Or use my axle speed/ rpm.  Cause it will be the same as yours.   Some diff ratio, same gearbox. Same 4th gear run.  

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If it’s manual you just use the diff ratio. Ie axle rpm x diff ratio = engine rpm. There is no slip with a manual so it’s easy as and precise.

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Anyone else booked for the All Ford Day cruise this year to York?

 

https://www.facebook.com/events/260482197871526/

 

It is back for 2018, the All Ford Day Cruise and will be on Sunday October 28. As with 2016 our destination will be York and the departure points will be Midland, Cockburn and Kingsway.

Reserve the date in your calendar and stay tuned for more information as the event draws closer.

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Nice coupe mate! What eng/driveline she running? 

 

Would like to say I will make it to the cruise but flat out with work atm so doubt I'll have my car finished :verysad1: 

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Spotted @Boganspeedon the way back from tech at the plex.

 

Was there with a couple of the usual suspects drinking coffee and looking at cars. 

 

The Army Tank got to hang out with its great grandad and its annoying American cousin. 

 

ObOuOst.jpg

Edited by Ralph Wiggum

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