Info & Tech

Free tools and technical reference we built for our own workshop β€” use them, no signup.

πŸš— Pick your car once β€” every tool fills itself in

Open any calculator and choose your make, model, generation and engine from the dropdowns. The tool loads the factory numbers for that car β€” gear ratios and axle ratios, OEM tyre size, wheel offset and bolt pattern, engine bore, stroke and compression ratio. Your choice is remembered on this device across all the tools.
158 factory configurations Β· 91 with engine specs Β· 142 with wheel data.

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Gear Ratio & RPM Calculator

Pick a vehicle for factory ratios, or enter your own. Engine RPM at any speed in every gear, crawl ratio and top speed per gear. Compare a regear or tyre size change side by side.

ToyotaFordJeep158 factory configs
Open tool β†’
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Tyre Size & Speedo Error

Compare two tyre sizes: diameter and ride-height change, how far your speedo and odometer are out, extra clearance needed, and the axle ratio that restores your gearing.

MetricFlotationSpeedo errorRegear hint
Open tool β†’
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Wheel Offset, Backspacing & PCD

Will they fit? Poke, inner clearance and track-width change between your current wheels and a new set, offset ↔ backspacing conversion, and a bolt-pattern measuring tool.

Offset ETBackspacingPCDFitment
Open tool β†’
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VIN Decoder

Year, manufacturer, plant, engine and trim from any 17-character chassis number, with a check-digit test. Sends the decoded vehicle straight into a parts request.

17-digit VINCheck digitGCC notes
Open tool β†’
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Service Schedule Planner

Build a maintenance schedule with UAE severe-service intervals, next-due by km and by date. Saves on your device, exports to calendar, CSV or PDF β€” and the tool itself downloads to work offline.

Saves locallyCalendar .icsCSV / PDFWorks offline
Open tool β†’
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Compression Ratio & Displacement

Displacement and static compression from bore, stroke, chamber, gasket and piston dish. Shows what a head skim, gasket change or overbore does, and effective CR under boost.

Static CRHead skimBoostEngine build
Open tool β†’
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More coming

Fitment guides, torque specs, part-number lookups and build write-ups. @n3worx

Need the part, not just the numbers?

We supply tested used OEM parts and manufacture custom components in the UAE.

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