paulf
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| posted on 12/12/06 at 06:08 PM |
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converting 919 blade engine to injection.
Im debating whether to change the injected crossflow engine in my car for a blade engine that I have. I spent last winter fitting megasquirt and dont
really want to go back to carbs on the bike engine.It is fitted with carbs at the moment so would need to find some throttle bodys to fit it, will the
throttle bodys from a later injected engine fit the manifold ? or would the 35mm ones fitted to my crossflow be big enough?.
I am assuming that if i did fit the engine with the existing carbs that they would need rejetting anyway to run correctly in the car.
Paul.
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zxrlocost
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| posted on 12/12/06 at 07:00 PM |
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whts wrong with the engine as it is mate?
itll give you ballistic performance! over the Xflow
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paulf
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| posted on 12/12/06 at 07:29 PM |
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Theres nothing wrong with using a carbed engine but as I have the megasquirt installed and working on the crossflow and enjoy experimenting with
injection i thought i would use it on the blade engine if I fit it and hopefully will be able to map it rather than mess about with carb rejetting.
I intended fitting a zetec originally which was the reason for getting the injection on the car, but cant fit one under the bodywork , therefore I
have a choice of bike engine which I already have in the garage, or rebuilding the crossflow which is not cheap or trying to find a 4 AGE engine and
bellhousing as a replacement.
Paul.
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zxrlocost
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| posted on 12/12/06 at 07:46 PM |
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I know people rejet there cars with dyno jet kits etc
but I never bothered with anything apart from having them balanced and a bit of by ear tweeking my car was Very VEry fast
...
personally I prefer the carb power delivery fierce as opossed to injections smooth delivery
ta chris
get the blade lump in
and have some 13,000rpm fun
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ChrisGamlin
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| posted on 12/12/06 at 09:12 PM |
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If you're going to do that then you're better off starting with a 929 / 954 engine and using the throttle bodies that come with it,
because I think the port spacing is different on the carbed / injected engines, and you'd also have all the sensors in place that might be
required which isnt necessarily the case with the carbed engine. Having said that, if you're going to do that then in turn start with an
injected R1 instead, because its far more proven, is more powerful and will give you better prop angles.
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paulf
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| posted on 12/12/06 at 10:36 PM |
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Yes it would be easier to start with an injected engine, but I already have a 919 and an 893 to use as a spare so need to go with them.I wondered if
the port spacing was differnt on the later engines.
The original plan was to convert the crossflow to injection and then swap it for a zetec and build a new car to put the bike engine in.As the Zetec
wont fit my existing car due to height issues with the body work I have to either put a bike engine in or improve the existing crossflow installation
and then build something new for the bike engine.
Paul.
quote]Originally posted by ChrisGamlin
If you're going to do that then you're better off starting with a 929 / 954 engine and using the throttle bodies that come with it,
because I think the port spacing is different on the carbed / injected engines, and you'd also have all the sensors in place that might be
required which isnt necessarily the case with the carbed engine. Having said that, if you're going to do that then in turn start with an
injected R1 instead, because its far more proven, is more powerful and will give you better prop angles.
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mark chandler
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| posted on 12/12/06 at 11:00 PM |
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Port spacing is definately different, later engines are slightly wider, nothing that a few bent tubes could not fix though.
The bore of the carbs is also smaller then the bore of the TB's, again nothing that a few bent tubes would not fix.
I intend doing this at some point as I have all the bits to hand, there are plenty of reasons for injection.... and a second hand set of TB's is
the same price as a dyno jet kit.
Regards Mark
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the_fbi
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| posted on 13/12/06 at 12:18 AM |
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If either of you do it, please write up some good docs!
I'll probably be doing this at some point to mine, even though I have a 954 sitting begging. Its just more fun converting a 919 to injection
than just dropping in (and playing with wiring) the 954.
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