Divbooks Garage Engine & Drivetrain — Est. 2011
§ ENGINE & DRIVETRAIN SPECIALISTS

Engines rebuilt.
Never just replaced.

A fifteen-strong Berkshire workshop of IMI-accredited master engine technicians. We diagnose on scan-tools, machine on our own bench, and dyno-tune before your keys go back on the hook. No middlemen, no upsells, no crate swaps unless it’s honestly the right call.

2,400+ Engines rebuilt
3Yr / 36k Workmanship warranty
4.9/5 1,180 verified reviews
FIG. 01 · IN-LINE FOUR — CROSS SECTION SCALE 1:6 · DWG-DG-4014-A TOP DEAD CENTER COMPRESSION STROKE 01 · DOHC VALVE TRAIN HEAD REBUILD · SHIM & LASH 02 · PISTON & RINGS HONE, DECK, RE-RING 03 · CONNECTING ROD RESIZE · ARP HARDWARE 04 · CRANKSHAFT TURN, POLISH, BALANCE TORQUE SPEC MAIN CAPS 65 FT-LB · ROD CAPS 45 FT-LB HEAD 110 FT-LB · SEQ. IN 3 PASSES CHECKED M.HALVERSON · IMI ATA-M 2026-07-17
02 — Service Intake

Tell us what it’s doing.

Fill the vehicle card and describe the symptom in your own words — the tech who’ll pull the codes writes back within an hour, weekdays 8am–6pm.

Vehicle intake

No spam · Tech callback within 1 hr
Trusted by fleets, indie workshops, and enthusiasts across the Home Counties
03 — Why owners drive past three shops to get here

Everything an engine rebuild needs, under one roof — and no one to hand it off to.

01 / 04

In-house machining bench

Bore, hone, deck, valve grinding — we own the mills and we run them. Nothing sits at a third-party shop for two weeks waiting on someone else’s queue.

02 / 04

IMI-accredited techs only

Every technician on the floor is IMI ATA-Master accredited, TechSafe registered, and Level 4 diagnostic certified. Your car is diagnosed by someone who’s built the exact powertrain before.

03 / 04

Dyno-verified before pickup

Every rebuild spends a session on our load-bearing dyno. You see the pulls, the AFR trace, the coolant map. No handshake deals.

04 / 04

Priced in the estimate, not the invoice

Flat-rate quote after diagnostics, itemized to the gasket. If a bore comes back oversized mid-teardown, we call before we cut.

04 — The Process

Three appointments. One call in between. Nothing hidden.

01

Intake & diagnostic

Drop-off or recovery. We scan, listen, pull compression & leak-down, borescope the cylinders, and write it up. £89 — credited if you book the work.

Day 1 · 90 min
02

Written estimate

Line-item quote, photos of what we found, options ranked (patch, refresh, full rebuild). You approve in writing before a bolt turns.

Day 2 · Emailed by 5p
03

Build, dyno & deliver

Teardown, machine, assemble to spec, break-in on the dyno, road-test 40 mi, and hand you the keys with the build sheet and torque log.

Timeline set at estimate
Two main dealers said replace the block. Divbooks pulled it, showed me a scored cylinder, honed it, and had my ’09 M3 back on the road in eleven days for a third of the price.
Sam Whitfield BMW E92 M3 · S65 rebuild · Reading · Mar 2026
05 — Service Tiers

Three ways in. All quoted flat, all warrantied the same.

DG-A · InspectionTier 01

Diagnostic

Full scan, compression & leak-down, borescope, road-test, and a written report.

£89flat
Credited toward any repair
  • OEM & enhanced scan pull
  • Per-cylinder compression + leak-down
  • Borescope images of each bore
  • Emailed report within 24 hrs
Book diagnostic
Turn Same day
Bay time ~90 min
DG-C · RebuildTier 03

Full rebuild

Complete strip & measure. New rotating assembly, machined block, balanced.

£6,850from
Naturally-aspirated builds · VAT inc.
  • Bore, hone, deck, align-hone block
  • New forged pistons + rods (optional)
  • Rotating assembly balanced to 1g
  • Break-in oil + first service included
  • 3-year / 36k warranty
Book consultation
Turn 3–5 wks
Warranty 36 mo
Intake received · A tech will call within the hour