Parts for your 1987 Suzuki Jimny-Timing belt kit

1987 Suzuki Jimny timing-belt-kit — what applies and why

Technical sources agree that whether a timing-belt-kit is relevant on a 1987 Suzuki Jimny depends on the engine fitted. The 1.3‑litre G13A (SJ413/Sierra) uses a toothed timing belt and takes a timing-belt-kit. By contrast, the 1.0‑litre F10A (SJ410) uses a timing chain, so a timing-belt-kit is not applicable to that variant. This aligns with the Suzuki SJ413/Sierra Service Manual (Pub. No. 99500‑83A00), Gates Australia and Dayco timing component catalogues, Suzuki EPC data, and the Haynes Suzuki SJ413/Samurai manual.

For 1987 Jimny/Sierra models running the 1.3 G13A, a timing-belt-kit is a sensible piece of preventative maintenance. The kit keeps the crank and cam in perfect sync so the old 8‑valve SOHC engine fires cleanly, idles smoothly, and delivers its trademark low‑down pull. A proper kit typically bundles a fresh belt, a tensioner, and any idlers, plus seals where specified. Swapping the lot at once saves headaches caused by a tired bearing or spring taking out a brand‑new belt.

Recommended replacement for Aussie and Kiwi conditions is every 100,000 km or 5 years (whichever comes first). For vehicles that live in dust, mud, creek crossings or see lots of stop‑start city heat, shortening the interval makes sense. If the service history’s a mystery, most owners just get it done for peace of mind. While the G13A is generally considered a non‑interference design, a broken belt still strands the car and can cause collateral grief if the tensioner lets go.

Good shops pair the belt job with fresh cam and crank seals to keep oil off the new belt, and they inspect the tensioner alignment, guide condition, and the plastic timing covers. They’ll set No.1 to TDC using factory marks, torque the crank pulley correctly, hand‑rotate the engine twice to confirm timing marks realign, and check belt tracking. Because the G13A’s water pump is driven by the accessory belt, not the timing belt, it isn’t always part of the kit—but it’s smart to assess it while access is good.

Owners should listen for chirps or whine at the front of the engine, look for cracking or glazing on the belt, and watch for oil weeps behind the timing cover—classic signs it’s due. Those with the 1.0 F10A chain‑drive variant don’t need a timing-belt-kit, their focus is chain wear and tensioner condition instead.

• Kit contents: belt, tensioner, idler(s), and often front oil seals.
• Service interval guide: 100,000 km/5 years, earlier if worked hard off‑road.
• Best practice: replace all related components in one go and keep oil off the belt.

Technical references: Suzuki SJ413/Sierra Service Manual (Pub. 99500‑83A00), Gates Australia Timing Belt Catalogue (G13A applications), Dayco Australia Timing Belt Guide, Suzuki Electronic Parts Catalogue, Haynes Suzuki SJ413/Samurai manual.

Popular questions

How often should the timing belt be replaced on a 1987 Jimny 1.3 (G13A)?
Most workshops in Australia and New Zealand recommend replacement every 100,000 km or 5 years, whichever comes first. Vehicles that spend their lives in heat, dust, mud or water crossings may benefit from shorter intervals. If the belt’s age or history is unknown, it’s wise to renew it and reset the clock.

Is the 1.3 G13A an interference engine?
The G13A 8‑valve as found in the SJ413/Sierra is generally regarded as non‑interference. That means a snapped belt typically won’t bend valves, but it will stop the engine dead and can still cause damage if the tensioner or idler fails. Preventative replacement remains the smart play.

How can someone tell if their 1987 Jimny has a belt or a chain?
Check the engine code and front cover style. The 1.3 G13A (SJ413/Sierra) has a toothed belt behind a plastic timing cover. The 1.0 F10A (SJ410) uses a timing chain with a metal front cover. The engine code on the block and the vehicle compliance details will confirm it.