Notice: We request that you don't just set up a new account at this time if you are a previous user.
If you used to be one of our moderators, please feel free to reach out to Chris via the facebook Outerlimits4x4 group and he will get you set back up with access should he need you.
Recovery:If you cannot access your old email address and don't remember your password, please click here to log a change of email address so you can do a password reset.

Fitting a 1hzj 21 spline gear box to a 2h motor.

Tech Talk for Cruiser owners.

Moderators: toaddog, Elmo, DUDELUX

Post Reply
Posts: 2877
Joined: Mon May 10, 2004 9:46 pm
Location: Goodna QLD

Fitting a 1hzj 21 spline gear box to a 2h motor.

Post by ludacris »

Ok we have a 2h motor with a blown gearbox and a new 1hzj gearbox without the bell.

Is it just a matter of using the 1hzj clutch kit with the 1hzj gearbox and sourcing a 1hzj bell. Anybody have a 1hjz bell in that case.

1hjz spline is 15mm longer than the 2h.

LudaCris
Cris's 4 X 4 Accessories & Suspension 0404 736 325 Rock Sliders From $499
Posts: 2097
Joined: Tue Aug 12, 2003 6:50 pm
Location: wollongong

Post by dow50r »

You should be able to change the input shaft and bell. Heard of people spacing the bell and using a 1hz plate with a 12ht pressureplate...or u could get a hdt for the front of it :-))))))))
Andrew
Posts: 701
Joined: Tue Feb 03, 2004 3:04 pm
Location: Melbourne

Post by 80UTE »

Input shafts shouldn't be interchanged because the geartooth is a different form (shape) and arn't compatable with the cluster gear . The shaft will phyically fit but is noisy in operation so the life is questionable. The early box's are heaps better stronger and more reliable. If you really want to use the box make a spacer between the g/box and bell housing get a 1HZ clutch plate and the 2h pressure plate . The clutch plate's are vertually identicle appart from the spline.


Wally
THERES ONLY ONE SUBSTITUTE FOR CUBES AND THATS MORE and if you want more inchs stroke it !!!!!!!!!!!
Posts: 701
Joined: Tue Feb 03, 2004 3:04 pm
Location: Melbourne

Post by 80UTE »

Input shafts shouldn't be interchanged because the geartooth is a different form (shape) and arn't compatable with the cluster gear . The shaft will phyically fit but is noisy in operation so the life is questionable. The early box's are heaps better stronger and more reliable. If you really want to use the box make a spacer between the g/box and bell housing get a 1HZ clutch plate and the 2h pressure plate . The clutch plate's are vertually identicle appart from the spline.


Wally
THERES ONLY ONE SUBSTITUTE FOR CUBES AND THATS MORE and if you want more inchs stroke it !!!!!!!!!!!
Posts: 701
Joined: Tue Feb 03, 2004 3:04 pm
Location: Melbourne

Post by 80UTE »

Input shafts shouldn't be interchanged because the geartooth is a different form (shape) and arn't compatable with the cluster gear . The shaft will phyically fit but is noisy in operation so the life is questionable. The early box's are heaps better stronger and more reliable. If you really want to use the box make a spacer between the g/box and bell housing get a 1HZ clutch plate and the 2h pressure plate . The clutch plate's are vertually identicle appart from the spline.


Wally
THERES ONLY ONE SUBSTITUTE FOR CUBES AND THATS MORE and if you want more inchs stroke it !!!!!!!!!!!
Posts: 1719
Joined: Sun Jan 25, 2004 11:45 am
Location: Brisbane

Post by RV80 »

We got it the 1st time :D
www.bolsys.com.au
Posts: 2097
Joined: Tue Aug 12, 2003 6:50 pm
Location: wollongong

Post by dow50r »

80UTE wrote:Input shafts shouldn't be interchanged because the geartooth is a different form (shape) and arn't compatable with the cluster gear . The shaft will phyically fit but is noisy in operation so the life is questionable. The early box's are heaps better stronger and more reliable. If you really want to use the box make a spacer between the g/box and bell housing get a 1HZ clutch plate and the 2h pressure plate . The clutch plate's are vertually identicle appart from the spline.


Wally
What he said :-)))
Posts: 2877
Joined: Mon May 10, 2004 9:46 pm
Location: Goodna QLD

Post by ludacris »

That is what I thought. Thanks 80UTE.

LudaCris
Cris's 4 X 4 Accessories & Suspension 0404 736 325 Rock Sliders From $499
Posts: 2097
Joined: Tue Aug 12, 2003 6:50 pm
Location: wollongong

Post by dow50r »

The other thing to quantify is...when you say you have a new 1hzj box...r u refering to a r151, or does it look thesame as the old 2h box???
Somewhere along the 75 series line, they went to r series boxes as opposed to h55...might have been the 78/9 series 1hz only.
Whilst the ratios are beter on the r box, they are weak compared to the h55
Andrew
Posts: 2877
Joined: Mon May 10, 2004 9:46 pm
Location: Goodna QLD

Post by ludacris »

Looks exactly the same as the old 2h box but different splines. Does any body know who can make a spacer up here in Qld.

LudaCris
Cris's 4 X 4 Accessories & Suspension 0404 736 325 Rock Sliders From $499
Post Reply

Who is online

Users browsing this forum: No registered users and 3 guests