Injectors

SimpleSimon · Post by **SimpleSimon** » Mon Jul 23, 2012 10:17 am

stevieturbo wrote:Just buy them from America.

Never had a problem myself dealing with the states

this is a useful link http://www.fiveomotorsport.com/ they will deal to the UK too, a few of the TVR RV8 boys have used them

Fozwanger · Post by **Fozwanger** » Tue Jul 24, 2012 7:28 am

Seen these, I have a friend in Melbourne who can send them to me for my "birthday".
Is there any issue with running larger injectors than you need, just incase I want to step up to 5.o ltr becase I am that stupid.

http://www.ebay.co.uk/itm/120912317948? ... 1423.l2649

http://www.ebay.co.uk/itm/110918198556? ... 1423.l2649

Jeff

DaveEFI · Post by **DaveEFI** » Tue Jul 24, 2012 8:12 am

You'll have problems getting a decent idle if the injectors are too large.

Fozwanger · Post by **Fozwanger** » Tue Jul 24, 2012 8:16 am

Thanks, 42 lb ers it is then.

How does everyone get on with the mega squirt set up? I'll post this in another section

stevieturbo · Post by **stevieturbo** » Tue Jul 24, 2012 10:25 am

DaveEFI wrote:You'll have problems getting a decent idle if the injectors are too large.

very dependant on application and ecu, and of course the injectors.

42lb's will be a doddle though, they are not big at all relatively speaking.

DaveEFI · Post by **DaveEFI** » Tue Jul 24, 2012 12:22 pm

My understanding is there is a minimum time an injector can be open for as well as a maximum. And if it is too large the idle and cruise will suffer. Sequential probably gives more tolerance than batch - but even that will have a limit.

DaveEFI · Post by **DaveEFI** » Tue Jul 24, 2012 12:34 pm

Fozwanger wrote:
How does everyone get on with the mega squirt set up? I'll post this in another section

If you intend DIYing it:-

It depends on how well you understand the principles of electronic injection.
Lots and lots of tweaks via the software.

Most of the units I get in for repair have very badly done mods. To the point where I usually rip them out and start again. Same with wiring harnesses.

If you have good soldering skills and have built electronic projects before without issues you'll be ok. Same with making up the harness. Provided you take time to read all the documentation.

Otherwise, go for a package from ExtraEfi, etc. Don't think you can simply save money by DIYing - unless you know what you're doing.

stevieturbo · Post by **stevieturbo** » Tue Jul 24, 2012 6:18 pm

DaveEFI wrote:My understanding is there is a minimum time an injector can be open for as well as a maximum. And if it is too large the idle and cruise will suffer. Sequential probably gives more tolerance than batch - but even that will have a limit.

I'd say the limit on batch is about 800cc per cylinder, although that will depend on camshaft and engine capacity etc.
Some may allow more, some less.

With sequential, Ive tuned 4 cyl cars with the ID2000's on Motec. They are truly remarkable, even happy idling in the 14's !

SimpleSimon · Post by **SimpleSimon** » Tue Jul 24, 2012 7:45 pm

stevieturbo wrote:
DaveEFI wrote:My understanding is there is a minimum time an injector can be open for as well as a maximum. And if it is too large the idle and cruise will suffer. Sequential probably gives more tolerance than batch - but even that will have a limit.
I'd say the limit on batch is about 800cc per cylinder, although that will depend on camshaft and engine capacity etc.
Some may allow more, some less.

With sequential, Ive tuned 4 cyl cars with the ID2000's on Motec. They are truly remarkable, even happy idling in the 14's !

Blimey

Everyday a school day as they say