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Old 04-08-18, 19:00
dub-ster dub-ster is offline
Van Man
Join Date: Oct 2009
Location: stoke on trent
Posts: 24
T4 Post Icon ACV ENGINE 2.5 TDI / Volvo


I've recently brought a T4 2.5 Tdi ACV with a 2.5 tdi volvo engine supplied. The ACV engine has a marking saying 74s and the volvo Engine has 74L. Only different i can see is the dip stick has a hole in the casing at the front.

Has anybody esle come across any other differences ?
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Old 06-08-18, 09:39
hobbyhorse hobbyhorse is offline
Serial Poster
Official MemberVW Transporter
Join Date: Dec 2007
Location: Essex
Posts: 2,496
Default Re: ACV ENGINE 2.5 TDI / Volvo

The main internal difference is that the Volvo car version has smaller bearing journals (crank) as it does not have the torque load requirements of a commercial vehicle.

There are obvious peripheral differences i.e. manifolds etc.

Ouch.... another knuckle
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Old 08-08-18, 06:06
adamss24 adamss24 is offline
Van Master Jedi
Join Date: Jan 2011
Location: london
Posts: 727
Default Re: ACV ENGINE 2.5 TDI / Volvo

There is only 1 difference in big ends on 2.5 tdi engine, the big ends are either 21.90mm or 24.90mm wide and is due to using sputter bearings or non sputter bearings . The 21.90mm wide big end bearings were fitted on 1T/AEL, d5252 t Volvo engine, AAT/AEL and ACV,AXG, AUF, AJT and a few of itís variants as fitted on the t4 van...
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