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Author Ecotech 1800 cams
Warren G
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Registered: 14th May 06
Location: Kent
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20th Feb 08 at 21:42   View User's Profile U2U Member Reply With Quote

what do standard 1800 cams run? anyone know

what sort of refiled cams can you run on standard hydralic tappets and pistons?
Robin
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Registered: 7th Jan 04
Location: Northants Drives: Clio 182 Cup
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20th Feb 08 at 21:46   View Garage View User's Profile U2U Member Reply With Quote

Are you after the duration and lift of standard cams?

Which 1800 engine? X18XE1? X18XE? Z18XE?
Warren G
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20th Feb 08 at 21:49   View User's Profile U2U Member Reply With Quote

the z18xe/x18xe1 engines


x18xe1 and z18xe are the same, just different management/fly by wire


yes, just woundering if x16xe cams would fit in....

lift and duration
Robin
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20th Feb 08 at 22:01   View Garage View User's Profile U2U Member Reply With Quote

X18XE1 specs are as follows

241 degrees, 8.45mm lift

They are quoted to fit the following engines

X14XE
C16XE/X16XE
X18XE1/Z18XE

all with the same part number for the replacement cams.

If nothing tickles your fancy, we can get the standard ones reground to your spec (within reason, obviously extra lift isn't possible)

On the standard lifters, you can use the following cams

246/240 9.4/9.25mm
248/248 10/10mm
252/252 9.45/9.45mm
272/272 8.9/8.9mm
281/281 10/10mm

Broster ran 288s on standard lifters with no problems.

I'm not sure about issues with lift with those cams, as I'm not familiar with the 1800s, but I'd say you'd get away with something similar to an X16XE.

Call us for prices BTW
Warren G
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Registered: 14th May 06
Location: Kent
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20th Feb 08 at 22:11   View User's Profile U2U Member Reply With Quote

quote:
Originally posted by Robin
X18XE1 specs are as follows

241 degrees, 8.45mm lift

They are quoted to fit the following engines

X14XE
C16XE/X16XE
X18XE1/Z18XE

all with the same part number for the replacement cams.

If nothing tickles your fancy, we can get the standard ones reground to your spec (within reason, obviously extra lift isn't possible)

On the standard lifters, you can use the following cams

246/240 9.4/9.25mm
248/248 10/10mm
252/252 9.45/9.45mm
272/272 8.9/8.9mm
281/281 10/10mm

Broster ran 288s on standard lifters with no problems.

I'm not sure about issues with lift with those cams, as I'm not familiar with the 1800s, but I'd say you'd get away with something similar to an X16XE.

Call us for prices BTW


thanks for that, i thought the max you could run on standard pistons was 268 degree cams?

i dont think you will beat kents price on a reprofile, going for 260 degree, 120 cash
Robin
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Registered: 7th Jan 04
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20th Feb 08 at 22:17   View Garage View User's Profile U2U Member Reply With Quote

The issue is the lift, not the duration.

Dave A was running long duration cams with a sensible lift, not sure of the exact specs, but say 270 degrees and 9mm lift, for example.

Off the shelf cams, 256/264 tends to be the most you can run without pocketed pistons.
Warren G
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Location: Kent
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20th Feb 08 at 22:24   View User's Profile U2U Member Reply With Quote

just think il stick with the 260 degree cams,

anything more will run too close i think,


so you do custom reprofiles?

Robin
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20th Feb 08 at 22:26   View Garage View User's Profile U2U Member Reply With Quote

We can get cams reground to a spec to suit you, if there's enough metal on the lobes to do it.

For example, I sold a pair of cams for a 1.4 16v VW Polo engine today, to work best with TBs, you can't buy them off the shelf at all, but we had them reprofiled for the specific application.

Buying new billet cams isn't that expensive either. What would you expect to pay for a pair of off the shelf ones?
Warren G
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Location: Kent
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20th Feb 08 at 22:29   View User's Profile U2U Member Reply With Quote

well i know there around 300-400 for off the shelf

but when i can drop my cams around to kent cams, get them reprofiled for 120 i cant complain realy
SAL
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Registered: 19th Dec 05
Location: Radlett, Hertfordshire
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21st Feb 08 at 16:51   View Garage View User's Profile U2U Member Reply With Quote

So the moral of the story is, x16xe cams go into the z18xe

Warren G
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Location: Kent
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21st Feb 08 at 18:10   View User's Profile U2U Member Reply With Quote

quote:
Originally posted by Stavs
So the moral of the story is, x16xe cams go into the z18xe




uhuh
Robin
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Registered: 7th Jan 04
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21st Feb 08 at 19:55   View Garage View User's Profile U2U Member Reply With Quote

Theoretically, yes.
RCS
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Registered: 26th Jan 05
Location: Lichfield/Dundee
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21st Feb 08 at 22:13   View User's Profile U2U Member Reply With Quote

What lift value is the duration quoted at for the standard cams?
RCS
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Registered: 26th Jan 05
Location: Lichfield/Dundee
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21st Feb 08 at 22:19   View User's Profile U2U Member Reply With Quote

quote:
Originally posted by Robin

If nothing tickles your fancy, we can get the standard ones reground to your spec (within reason, obviously extra lift isn't possible)




How is extra lift not possible? Just grind the base circle if there is enough material?
Dave A
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Registered: 10th Dec 03
Location: County Durham
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22nd Feb 08 at 10:47   View User's Profile U2U Member Reply With Quote

I have found from first hand experience that regrinds are not worth the savings in cash over billet blanks. They will wear out the lifters too quickly and you often wont see the gains that a cam ground from a blank will see due to various reasons.

I have never been 100% happy with off the shelf cams on most engines as there are som many varying factors that will need to be taken into consideration to get the correct cam.

csweatherston
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Registered: 16th Jan 06
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22nd Feb 08 at 17:09   View User's Profile U2U Member Reply With Quote

quote:
Originally posted by RCS
What lift value is the duration quoted at for the standard cams?


last time i measured i got 240.9degree's and 8.4mm of lift.

tbh, you can go crazy with duration, but unless you have the peak lift there wont be many benefits. (ie 280+degree with 8mm lift etc)
RCS
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Registered: 26th Jan 05
Location: Lichfield/Dundee
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22nd Feb 08 at 18:38   View User's Profile U2U Member Reply With Quote

From my measurements the valve is open for 270degrees (crank angle) with 8.45mm of lift. But cam duration is quoted at a certain lift value - i.e from the point of 0.1mm of lift the duration is 234 degrees.
Vaux Lad
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Registered: 15th Dec 04
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22nd Feb 08 at 19:29   View User's Profile U2U Member Reply With Quote

The standard cams are 241 degrees, and 8.45mm lift, so Csweatherston,that was a very accurate measurement

[Edited on 22-02-2008 by Vaux Lad]
RCS
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Registered: 26th Jan 05
Location: Lichfield/Dundee
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22nd Feb 08 at 19:40   View User's Profile U2U Member Reply With Quote

That duration figure means bugger all unless you state what lift value you are quoting from.
csweatherston
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Registered: 16th Jan 06
Location: Devon
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23rd Feb 08 at 01:09   View User's Profile U2U Member Reply With Quote

i measured mine from 1mm of lift to 1mm before close.
my current cams give me 9.4mm peak lift
RCS
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Registered: 26th Jan 05
Location: Lichfield/Dundee
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23rd Feb 08 at 06:04   View User's Profile U2U Member Reply With Quote

You are measuring your camshafts completely wrong.

Have a look at what cam manufacturers quote duration at. Even then it is still not perfect as it doesn't describe the profile to any great extent.




 
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