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Old 02-11-2017, 10:10 AM   #672
tall boy

Name: tall boy
Title: Too Much Time
Status: Not Here
Join Date: Sep 2012
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Posts: 794
Have been a while but we done a load of work.

We got the new build 18.4L V8 engine running with the commonrail XPI fuel system. This engine got 2L more displacement compared to the old 16.4L that we run last year with PDE injector or pump injectors.

We had to deal with a load of gremlins but what would you expect building a commonrail XPI fuel system twice as big as original so we took time the test a load of stuff eliminating things like injector failure and low compression ratio due to wrong cam timing or valve clearance and so on but all turn out to be OK. We had low quality and to retarded injection due to not having a solid hydraulic link in the injector due to still having air in the fuel system and if you go big with the fuel system fuel flow becomes low as well so you need to give it more time to bleed out so we started with a very grumpy prostock like engine, loads of white smoke ending up with a very aggressive sounding non smoking engine with the injection timing and fuel pressure I wanted to run as you can see in the YouTube movie I made.

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