Looking For Local Info On Bosch Ev14 Fuel Injectors .

[discopotato03]

Hi all , I was looking around recently and came across the mention of Bosh EV14 fuel injectors . Actually I chased a link into an American mob who mentions they do nice things with a couple of sizes of these EV14 style squirters .

http://www.injectordynamics.com/questionsanswered.html

Being me and wanting to know more about the changes to injectors since OE EFI came about I dug deeper .

Basically I think the cronological line goes EV1 which is the fat bodied things found in early Nissans ie L Series/Z18/FJ20 and early EFI Subies - like mine .

They were the ones that fitted into insulators and had a clamp plate anchored to the manifold with two small diameter bolts/screws .

EV6 I believe are thinner and retained by the fuel rail only .

EV14 Bosh reckons are a later development of the EV6 and can be shorter lighter and with the internal moving bit much ligher than the EV6's .

From the above link I gather that having the moving part of the injector much shorter and lighter makes for far more accurate control of the valve so amongst other advanteges the injector size can be larger and still have good mixture control at idle and very light loads . I imagine this would be great news for aftermarket management tuners .

The thing I'm having trouble finding out about is which model cars here in Oz have these injectors standard because second hand they could be a cheapish source of useful injectors .

I'm not 100% sure but I think GM LS2 engines may use the mid length EV14 injectors (OE ones are available in three lengths , got a link for some specs later) , and I think the later Ford I6 and V8 engines may use them too .

Not being much of a Holden nut I don't know how the timeline goes with LS1/2/76/92 etc etc . Can someone help here as there is a reasonable chance that most/all LS2 and later ally V8's have these injectors . The 7 Litre one may use bigish ones ?

Lastly there was a thread on larger injectors for R34 Neo engines and possibly a similar/same length EV14 one in the right size could be the go .

Any info to add ?

Cheers A .

[discopotato03]

Some Bosch specs .

http://www.bosch-motorsport.de/pdf/compone...alves/EV_14.pdf

I'd like to know if any machining needs to be done to seat these injectors where the old fat bodied EV1 style injectors lived in the inlet manifold of older style engines .

Cheers A .

Edited December 6, 2009 by discopotato03

[JonnoHR31]

did a qucik google search out of curiosity and found this - http://www.injectorsonline.com/indivprod.p...=74&scid=11

just did some more searching and it seams stock ls2 injectors are 36lb/hr or 390cc. wouldnt be worth it for a skyline

[discopotato03]

Does anyone happen to know what the later turbo Fords use in the way of injectors ? The Typhoon type 4L six must have reasonably big injectors to go with its around 650cc cylinders and the 7 Litre Chev 800+ cc's .

The American aftermarket probably has useful things and maybe affordable due to economies of scale .

I believe Insight sells the Dynamic modified 750's and 1000's and the price is I think something in the Nismo range .

A .

[discopotato03]

This is a link to a Z32 conversion kit for EV14 injectors , the first pic shows the manifold adapters and seals .

http://www.motoiq.com/Forum/tabid/63/aff/7.../1/Default.aspx

A .

[JonnoHR31]

that link i posted says the xr6t is same as standard falcons at 295cc. cant imagine the f6's being too much bigger

looks like f6 are same as standard ones aswell, but run at a higher pressure. google knows everything

[Sydneykid]

We have been having really good success with Injector Dynamics injectors, extemely accurate and perfectly matched sets of 4 or 6. For around $US115 each they are a true technology bargain.

They are so accurate that Dyno Dave is now tuning with voltage, fuel temperature and fuel pressure correction using full 4 dimensional mapping. The A/F ratios are unbelievably accurate now, all through the race, hot, cold, wet, dry, it maintains the tuned A/F ratios all the way. This means better fuel economy, which is important in long distance races and more power over the distance, no matter what the conditions. To get the benefits at this level you need accurate, consistent and matched injectors.

Cheers

Gary

[Lukas 33]

We have been having really good success with Injector Dynamics injectors, extemely accurate and perfectly matched sets of 4 or 6. For around $US115 each they are a true technology bargain.

They are so accurate that Dyno Dave is now tuning with voltage, fuel temperature and fuel pressure correction using full 4 dimensional mapping. The A/F ratios are unbelievably accurate now, all through the race, hot, cold, wet, dry, it maintains the tuned A/F ratios all the way. This means better fuel economy, which is important in long distance races and more power over the distance, no matter what the conditions. To get the benefits at this level you need accurate, consistent and matched injectors.

Cheers

Gary

I was told that these injectors were very good by another person on these forums. I Would like to get some of them but I am not sure what fuel rail would suit. I have an rb25 head with the standard runners on it. Obviously its not going to fit in the stock fuel rail. Can anyone please suggest a good top feed rail that I can use for these injectors on my rb25 runners? PLEASE I think they are 11mm aren't they? Not trying to hijack your thread I just thought the information might also be usefull to other members out there who are considering these injectors.

Cheers

Lukas

[discopotato03]

If you look in that picture above you can see adapters fitted to these EV14 injectors so they can be used in 11 or 14mm hole type rails .

Also from Bosch specs they come in three lengths , and I've seen pics of adapter sleeves on their lower ends but for what engine/manifold I can't remember .

The tuners in the US are blown away by how accurately these work and how clean they can get mixtures with 1000cc injectors on 500cc cylinders ie 2L four and no doubt 3L sixes .

If you go to the Injector Dynamic site they tell you about teasing a pre V Tech Honda 1800 four with 2000cc injectors to see if it would run even passably .

They have a link to a You tube vid of it running and althought it idled at 12:1 it seemed reasonably happy with it .

From the Chev people , LS2's used them std , I gather these are normally tested at something like 58 psi and may have been intended for returnless type fuel systems - don't latter Commodes have this ?

Have a feeling these will get real popular real quick here , cheers A .

Gary must talk soon .

Edited December 8, 2009 by discopotato03

[Lukas 33]

Yeh from what I have heard they are AMAZING injectors. I plan on getting rid of my SARDs and putting in some 1000cc ones of these. Just to give me some lee way for if we ever get e85 up here. Do they come standard with the adapters for 14mm to 11mm? Yeh SK help us out plz

[discopotato03]

Well if your R33 is what they are for they won't fit a side feed rail anyway .

It may pay you to find out if the R34 Neo rail suits 14mm O ring injectors and if it bolts to the R33 lower manifold section .

If not it probably wouldn't be the end of the world to have a rail made from one of those aluminium extrusions .

A .

[Lukas 33]

Well if your R33 is what they are for they won't fit a side feed rail anyway .

It may pay you to find out if the R34 Neo rail suits 14mm O ring injectors and if it bolts to the R33 lower manifold section .

If not it probably wouldn't be the end of the world to have a rail made from one of those aluminium extrusions .

A .

Yeh I was going to have to go a top feed but from what I can see Greddy only does a 10.5mm one for standard 25 runners. But yeh I am looking into other options for the top feed rail. Never thought about a 34neo.....will have a search

Cheers

[Lukas 33]

Ok I just went to buy a set of the Injector Dynamics 1000cc injectors online and I cant find somewhere to buy them that will deliver to Australia. Obviously I must be looking in the wrong spot :S

Any help?

Cheers

[discopotato03]

I think Insight may have them , ask Scott .

A .

[Lukas 33]

Ah yep cheers $195 each from Insight Motorsport

[Swiper the Fox]

Godzilla Motorsport have just became a distributor for these also.

[T04GTR]

so how do seimans deka's compare. for 40usd each. 60lb. good spray pattern?

ps why cant siemens have a product sheet like that bosch ev14 one <_<