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85 Toyota Hilux problems

Tech Talk for Cruiser owners.

Moderators: toaddog, Elmo, DUDELUX

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Posts: 5
Joined: Sat Jan 27, 2007 12:18 pm

85 Toyota Hilux problems

Post by kezsime »

l have recentally converted my 85 Toyota hilux 3y engine to a 253. l got my conversion kit from castlemain rod shop. since l have put the conversion kit l have blown 2 reco gearboxes in two months my gearbox is a G52 the orginal 5 speed can l put a stronger gearbox if so which gearbox please help car sending me broke family man stressed
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Joined: Mon Jan 01, 2007 8:46 pm
Location: LOGAN

Post by DAV029 »

Marks 4WD Adaptors manufacture a heavy-duty 5-speed manual transmission to overcome the strength problems associated with the Hilux/4-Runner 4 and 5-speed gearboxes when fitted with larger engines.
The heavy duty 5-speed, (originally a Toyota Dyna truck gearbox) when fitted with the new adaptor, gearbox top, selectors and main output shaft etc will directly replace the Hilux/4-Runner 5-speed gearbox.

Marks 4WD Adaptors fully dismantled the gearbox and recondition it using all new bearings, seals etc. A new rear housing is fitted to the gearbox so that the vehicle’s original transfer case can be retained. The main output shaft in the gearbox is replaced with one that allows the Hilux/4-Runner coupling sleeve to mate it to the transfer case.

Marks 4WD Adaptors manufacture a special gear lever housing that has been designed to accept the standard Hilux/4-Runner 4-speed diesel and 5-speed diesel or petrol gear lever. The housing also allows the gear lever to emerge through the same hole in the transmission tunnel.

The heavy-duty 5-speed gearbox features a low 1st gear, which is ideal for rock crawling and general four wheel driving.

The gearbox has the following ratios: 1st 5.15:1 2nd 2.87:1 3rd 1.50:1 4th 1:1 and 5th 0.83:1 or 17% overdrive.

This gearbox has the same bolt pattern as the R151 gearbox found in the 3ltr diesel, 3ltr and 3.4ltr petrol Hilux, Surf and Prado vehicles.


The gearbox can be fitted to various engines including Toyota Hilux/4-Runner 4 cylinder petrol and diesel, Holden V6, V8, Chevy V6, V8, Oldsmobile V6, V8 and Buick V6, V8 engines
http://www.marks4wd.com/products/engine ... iluxt.html
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Joined: Fri Jul 07, 2006 9:00 pm
Location: Ipswich

Post by Sic Lux »

Also i read on a web page some where that there is a G54 box just stronger but look identical to G52 only way you can tell is a code near the front shaft somewhere i'm also fairly sure it said that they are rare to find had a bit of a look but can't find a link to it
plenty of parts on the bench
Posts: 5
Joined: Sat Jan 27, 2007 12:18 pm

85 hilux

Post by kezsime »

Hi Davo29 by any chance do you know what model toyota dyna box i need tryed ringing marks adaptors but wont tell me what model i need
simon
Posts: 192
Joined: Mon Jan 01, 2007 8:46 pm
Location: LOGAN

Post by DAV029 »

un sure if you ring toyota they should point you in the right direction
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