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Location:
Northwestern Sydney
Registered:
August 2002
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Preparing an N/A engine for forced inducion.
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Thu, 10 June 2004 00:19
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A side from intake piping, Intercooler and all the "bolt on" parts of creating a Forced induction motor, what has to be done to the engine itself.
Currently I want to lower the compression (first I need to work out the current compression in N/A form) But I'm likely to be lowering the compression a fair bit (10.5 down to around 8.5-9)
Will I run into issues using thick metal HG, should I replace the head bolts with ARP items so I can torque the head down more?
I want to run around 15lb boost (possibly Nitrous as well)
The injectors will be upgraded, and the valve springs/seal need looking at.
But is there any thing else? This will be a street car with occasional strip use.
Cheers
Simon.
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Toymods Vice President
Location:
Sydney
Registered:
May 2002
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Re: Preparing an N/A engine for forced inducion.
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Thu, 10 June 2004 03:32
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Is this for the 18RG?
What are your power targets?
I'd be making sure that the oiling system is well and truly up to the task, prefferably a higher volume pump if you can get it along with a higher capacity sump and an oil cooler.
Other than that it's going to be engine specific. I'm sure there are some engines out there that have a tonne of problems with oil control and blowby when they are feed a bit of boost but it's got to be looked at on an engine by engine basis.
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Location:
Northwestern Sydney
Registered:
August 2002
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Re: Preparing an N/A engine for forced inducion.
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Thu, 10 June 2004 03:52
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Yep the 18R-GEU.
Power wise as much as I can get but No more than 150rwkw I don't really want to start playing with the bottom end too much.
This is really a learning curve sort of thing as I've never pulled an engine down or taken a head off. there are unanswered questions as to the current compression and engine size (ie could be 2.4lt probably 2.2lt) that I would like to investigate and basically get a little more aquanted with the internals of an engine and I'd like to replace the valve seals and springs while I'm there.
I do know that I'd like to drop the compression as a minimum, and I have a feeling the oil pump isn't a standard Item or it has been rebuilt. The whole engine was rebuilt only 40,000k's ago as an N/A track engine before I got it. unfortunatly the builder was doing 2 18R's simultaniously and can't remember the specs for each.
The Sump I'll have to look into.
BTW: I'll be super charging it with either S/C 12 or 14 depending on if I can fit a 14 in or not.
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Location:
south east - melbourne
Registered:
March 2004
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Re: Preparing an N/A engine for forced inducion.
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Thu, 10 June 2004 05:32
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fuel pump , geabox
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Location:
Brisbane Qld
Registered:
May 2002
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Re: Preparing an N/A engine for forced inducion.
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Thu, 10 June 2004 13:54
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Sorry guys, but when I saw the topic my first thought was
Step 1: approach slowly so you don't frighten the motor
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Location:
IN FRONT OF YOU
Registered:
May 2003
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Re: Preparing an N/A engine for forced inducion.
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Thu, 10 June 2004 14:12
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Simon, I recommend reading maximum boost. It addresses the likely areas for upgrade when turbo an N/A engine.
Take what you need and leave the rest.
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