nre Posted February 21, 2004 Share Posted February 21, 2004 Weird situation here- i've got an 1800 zetec which has the RQB engine code stamped onto the block. This should be the 130ps spec version of the engine as fitted to the escort xr3i 130. OK so far? Well, last week I went to change the clutch, (engine not mated to gearbox as yet) and I found that the 220mm clutch that I believed should be fitted to the engine was actually a 240mm clutch (I'm measuring the outer diameter- I assume this is right?), and therefore corresponding flywheel. This dodginess is making me wonder whether the engine is some weird hybrid of parts, and whether I do therefore have the 130 cams. So, I finally get to the question- is there an easy way to ID the 1.8 130 cams (I know these are allegedly the same profile as the 2.0 zetec, but maybe they have different markings? I don't want to change the cams if I don't need too...) I can post piccies if this would help, or other peoples piccies would be equally handy... Ta for any advice offered, Neil Quote Link to comment Share on other sites More sharing options...
Kevin Wood Posted February 22, 2004 Share Posted February 22, 2004 I had a 2 litre Zetec which had a bigger clutch than I expected on it. I think the diameter of mine was consistent with a 2.5 V6 engine so I wouldn't read too much into it. They probably decided to uprate them at some point in the production. Either that or the Haynes manual is wrong. Don't really have any info on cam identification, I'm afraid. Kevin Quote Link to comment Share on other sites More sharing options...
Robin Posted February 22, 2004 Share Posted February 22, 2004 I have just taken the cams which should be 130s out of my Speedsport. The exhaust cam is numbered L9138 938A. No other identification on it I can see. I don't know if this refers to the casting or the grind of the cam. Robin Quote Link to comment Share on other sites More sharing options...
Westfieldman Posted February 22, 2004 Share Posted February 22, 2004 I have just taken the cams which should be 130s out of my Speedsport. If you use a pair of callipers and measure the total depth of the lobe I can measure some standard 1800 ones at 11pm tonight after work the 130's are a little bigger it's the easiest way. Quote Link to comment Share on other sites More sharing options...
Robin Posted February 22, 2004 Share Posted February 22, 2004 Inlet lobe 44.59mm Exhaust lobe 43.67mm The engine has only done 800miles so there should be no wear factor. Robin Quote Link to comment Share on other sites More sharing options...
Westfieldman Posted February 22, 2004 Share Posted February 22, 2004 Its cold out side but I said I would so coat back on and out to the garage.................................................................................... .............................43.7 both number cast into both cams L913B. Quote Link to comment Share on other sites More sharing options...
nre Posted February 23, 2004 Author Share Posted February 23, 2004 Thanks guys, I'll beg-steal-borrow some calipers and get measuring tonight if poss... Neil Quote Link to comment Share on other sites More sharing options...
nre Posted February 23, 2004 Author Share Posted February 23, 2004 OK, borrowed some flashy digital vernier calipers (so no errors in the reading! ) , this is what I get: Inlets average ~45.4mm (+-0.15mm) Exhausts average ~44.6mm (+-0.15mm) Both cams have the L913B ID So, both cams come out about 0.8mm LARGER than Robin's measurements, and Westfieldman's identical inlet and exhaust cams seems strange. So, my cams should if anything give greater valve lift. The plot thickens... Quote Link to comment Share on other sites More sharing options...
Robin Posted February 23, 2004 Share Posted February 23, 2004 I would hazard a guess that the cams differ more in duration and timing than they do in lift.I think the Piper cams I have just installed achieve more of a power increase by this method than by increasing lift. What I would like to know (Blatman suggests search ) is how a hydraulic tappythingy maintains a constant distance between cam lobe and valve tip? Robin Quote Link to comment Share on other sites More sharing options...
Blatman Posted February 23, 2004 Share Posted February 23, 2004 There's only room for so much incompressable oil in the oil gallery of a hydraulic tappet. Once it's full, it's full. It's a known length when it's full, so the gaps can be calculated.......... didn't think it was that hard....... Quote Link to comment Share on other sites More sharing options...
Robin Posted February 23, 2004 Share Posted February 23, 2004 Sorry Sir (Pulls hair shirt over head again) Quote Link to comment Share on other sites More sharing options...
Ian Podmore Posted February 24, 2004 Share Posted February 24, 2004 So, both cams come out about 0.8mm LARGER than Robin's measurements, and Westfieldman's identical inlet and exhaust cams seems strange. So, my cams should if anything give greater valve lift. What matters for the lift is the difference between the base circle of the cam and the radius of the lobe. As a point of interest, reground cams acheive greater lift and duration by decreasing the base circle of the cam. Also, (from memory) 130 cams have a standard lift of about 9.3mm and duration of 248 degrees. Quote Link to comment Share on other sites More sharing options...
Clanger Posted March 6, 2004 Share Posted March 6, 2004 The correct way to ID the cams you have is using the method Ford itself uses for ID of the cam castings. I'll try to explain: Each cam is given a cast ring code which is used at the factory to enable the machines to identify which cam is being ground. The cams are ground in batches, and the machines are able to self adjust for each batch. With your cam sitting in front of you, and the oil seal diameter to your left identify the following: To the left of the pair of lobes for No1 cylinder should be rough cast daimeter. This diameter may or may not contain a rough cast concentric ring. If it does it is signified by a 1 if not it is signified by a 0. Moving onto pair of lobes of No2 cylinder the rough cast diameter will have no cast concentric rings for any cam. This is signified by a dash -. Onto No3 lobes. The area to the left can contain up to two concentric cast rings. Working from left to right in this area. No rings = the code 00 1 ring to the left of this area = the code 10 1 ring to the right of this area = the code 01 Two rings in this area = the code 11. With me ? Onto the last pair of lobes for cylinder No4: Same as No3, ie. The area to the left can contain up to two concentric cast rings. Working from left to right in this area. No rings = the code 00 1 ring to the left of this area = the code 10 1 ring to the right of this area = the code 01 Two rings in this area = the code 11. So for upto a 95 Model year engine inlet 1.8 (130ps) and 2.0(140ps) camshaft code will be: 0-1010 exhaust 1.8 (130ps) and 2.0(140ps) camshaft code will be: 0-1100 So for upto a 98 Model year engine inlet 1.8 (130ps) and 2.0(140ps) camshaft code will be: 0-0011 ex 1.8 (130ps) and 2.0(140ps) camshaft code will be: 1-0010 Confused ???? I am Cheers Quote Link to comment Share on other sites More sharing options...
nre Posted March 8, 2004 Author Share Posted March 8, 2004 Hi Clanger, Ta for the info, just the kind of thing I wanted. I'll check tonight. Neil ps are you Clanger the striker driver? I assume so? Should've posted my question on the Sylva forum! Quote Link to comment Share on other sites More sharing options...
Clanger Posted March 8, 2004 Share Posted March 8, 2004 Shhhhhhhh! The westie boys might hear Glad to help though. If you're confused by my explanation, post a pic and I will try to decifer the code Quote Link to comment Share on other sites More sharing options...
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