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Opel Vectra b 1.8 16v X18XE - Timing Setting, Tolerances, Cam Positions & Pulley Adjustments

olzel 21195 14
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  • #1 17072580
    olzel
    Level 13  
    Posts: 181
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    Hello, kind of banal and yet I fell, I made a head with the Opel Vectra b 1.8 16v x18xe. If someone knows how to set the rollers in tolerance, the date says that the signs from the valve cover, however, here are other pulleys and it comes out to face each other. And in what position should be the cams of the first cylinder. I attach photos [/ u] I will add that on the exhaust shaft there are two features on the pulley on the suction one feature for this pulley exhaust expiration can be assumed in two ways
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  • #2 17072749
    ociz
    VIP Meritorious for electroda.pl  
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    You're wrong in the picture. The lower marks are to be opposite each other, and the ones you have opposite are to be at the top.
  • #3 17072957
    olzel
    Level 13  
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    There are no signs there, it is only on the exhaust wheel I marked with a white marker where there are signs on both pulleys
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    • Opel Vectra b 1.8 16v X18XE - Timing Setting, Tolerances, Cam Positions & Pulley Adjustments IMG_20180301_180408.jpg (1.66 MB) You must be logged in to download this attachment.
  • #4 17072985
    Daro122
    Level 31  
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    So it will be fine .
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  • #5 17073009
    omegolotC30NE
    Level 24  
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    You must have the exhaust shaft wheel drive in the EX cutout, you do not show what is under the screw in the pictures.
  • #6 17073071
    olzel
    Level 13  
    Posts: 181
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    Agree the buddy, just how should the rollers be set?
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    • Opel Vectra b 1.8 16v X18XE - Timing Setting, Tolerances, Cam Positions & Pulley Adjustments IMG_20180301_181703.jpg (1.53 MB) You must be logged in to download this attachment.
  • #7 17073101
    Daro122
    Level 31  
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    For the exhaust shaft you set the pin on the EX, for suction on IN
  • #8 17073161
    olzel
    Level 13  
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    Well, I know, but what are the features on the pulleys according to the valve cover or opposite each other?
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  • #9 17073183
    Daro122
    Level 31  
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    As in the appendix features at the top.
  • #10 17073336
    olzel
    Level 13  
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    Well ok, that is, let someone competent speak for repairing the head 600 PLN ?
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  • #11 17073515
    Daro122
    Level 31  
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    That's how cams sideways and signs at the top, overlap with the signs on the housing. Mount it, crankshaft, without candles you will sense if it interferes but it should be good. Also use the camera before disassembly, it is useful.
  • #12 17074443
    olzel
    Level 13  
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    Unfortunately, the car arrived on the carriage after the collision of the timing belt broken the so-called. luncheon meat
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  • #13 17085860
    olzel
    Level 13  
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    The auto-made x18xe features according to the valve cover are set as you wrote greetings and thanks
  • #14 17196901
    Lowcatalentow
    Level 2  
    Posts: 2
    Rate: 5
    Gentlemen, how to set timing in x18xe. I have two marks on the exhaust shaft and on the inlet one
  • #15 17339053
    wojt3k
    Level 15  
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    you set the signs so that the first piston would have closed valves
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Topic summary

✨ The discussion revolves around setting the timing for the Opel Vectra B 1.8 16v X18XE engine after a head rebuild. Users clarify the correct alignment of the timing marks on the exhaust and intake pulleys, emphasizing that the exhaust shaft should be set to the EX cutout and the intake to the IN position. The consensus is that the camshafts should be positioned so that the first cylinder has closed valves, with the timing marks aligned at the top. Additional advice includes using a camera for reference during disassembly and ensuring the crankshaft is positioned correctly without spark plugs to check for interference.
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FAQ

TL;DR: On the Opel X18XE (16‑valve), “For the exhaust shaft you set the pin on the EX, for suction on IN.” Align cam marks to the top references, ensure lower marks face each other, then hand‑crank without plugs to verify clearance. [Elektroda, Daro122, post #17073101]

Why it matters: DIYers fixing Opel Vectra B X18XE timing avoid bent valves, misfires, and wasted labor.

Quick Facts

How do I set the timing on an Opel Vectra B 1.8 16V X18XE?

Use the top housing marks and verify by hand before starting. How-To: 1. Position cams “sideways” for cylinder 1 and align top marks with the housing. 2. Install the belt, recheck that the top marks overlap. 3. Remove spark plugs and hand‑turn the crank to feel for interference. “Mount it, crankshaft, without candles you will sense if it interferes.” [Elektroda, Daro122, post #17073515]

Which timing marks should align: top, bottom, or opposite each other?

Set the lower marks to face each other. Align the cam marks at the top with the valve cover references. Expert note: “The lower marks are to be opposite each other, and the ones you have opposite are to be at the top.” This ensures correct phasing before tensioning the belt. [Elektroda, ociz, post #17072749]

What do the IN and EX markings on the cam sprockets mean?

They are alignment indexes for the cam pins. Set the exhaust cam’s pin into the EX cutout and the intake cam’s pin into the IN cutout. Expert quote: “For the exhaust shaft you set the pin on the EX, for suction on IN.” This avoids choosing the wrong visual scratch or paint mark. [Elektroda, Daro122, post #17073101]

Where is the EX index cutout on the exhaust cam sprocket? I can’t see it.

The EX indexing cutout can sit beneath the central bolt area. Ensure the sprocket’s drive locates in the EX cutout, not a superficial mark. Quote: “You must have the exhaust shaft wheel drive in the EX cutout, you do not show what is under the screw.” Remove the bolt or cover to confirm the true index. [Elektroda, omegolotC30NE, post #17073009]

I see two marks on my exhaust pulley and one on the intake—normal?

Yes, users report this configuration on some X18XE pulleys. Specifically, “on the exhaust shaft there are two features on the pulley, on the suction one feature.” This visual mismatch causes confusion if you rely only on scratches or paint. Use the factory references for reliable setup. [Elektroda, olzel, post #17072580]

Which mark should I use when the exhaust pulley shows two marks?

Ignore duplicate paint dabs or unverified scratches. Index the exhaust cam’s pin to the EX cutout and the intake cam’s pin to the IN cutout, then align the top references. Quote: “For the exhaust shaft you set the pin on the EX, for suction on IN.” [Elektroda, Daro122, post #17073101]

How should the cams be positioned for cylinder 1 at TDC on X18XE?

Set timing so cylinder 1’s valves are closed when marks align. The cam lobes for cylinder 1 should not press the followers. Expert note: “you set the signs so that the first piston would have closed valves.” This indicates compression TDC for cylinder 1. [Elektroda, wojt3k, post #17339053]

How can I confirm the timing is safe before the first start?

Remove spark plugs and rotate the crankshaft by hand. Feel for any interference and verify the marks return to alignment. Expert tip: “without candles you will sense if it interferes.” If resistance appears, stop and recheck alignment before attempting a start. [Elektroda, Daro122, post #17073515]

Do the cam marks reference the valve cover or another housing?

Use the top references on the housing/valve cover. The cam features belong at the top when aligned correctly. Guidance: “As in the appendix features at the top.” Reconfirm after belt installation, then hand‑rotate. [Elektroda, Daro122, post #17073183]

What does “cams sideways” mean on this engine?

It describes the lobe orientation when cylinder 1 is at compression TDC. The intake and exhaust lobes for cylinder 1 point outward, leaving both valves closed. Quote: “That’s how cams sideways and signs at the top.” With marks aligned, you can proceed to tension and verification. [Elektroda, Daro122, post #17073515]

My timing belt broke and the engine “collided”—what should I do?

Treat it as a collision engine situation. Inspect the cylinder head, valves, and guides before reassembly or start. A user reported “the car arrived… after the collision of the timing belt broken.” Do not crank on a damaged head; repair as needed first. [Elektroda, olzel, post #17074443]

Any practical tips to avoid mistakes during a timing job on X18XE?

Photograph every reference before teardown, then replicate during assembly. This preserves the exact pre-failure or pre-service orientation. Expert tip: “Also use the camera before disassembly, it is useful.” Combine photos with EX/IN indexing and top mark alignment for reliability. [Elektroda, Daro122, post #17073515]
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