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h motor, j motor, g motor comparison
https://auszookers.com/forum/viewtopic.php?f=5&t=48822
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Author:  tanshi [ Tue Dec 23, 2014 4:27 pm ]
Post subject:  h motor, j motor, g motor comparison

As most of you know im looking at a h27 for my buggy.

to broaden my search a bit I'm trying to figure out what's the same and what's different when it comes to H J and G series motors.

What I know already.
* G16 and J18 and J20 bell housings are the same pattern and bolt up
* G16, J18 and J20 are different to H20

* J series motors have an 8 bolt pattern on the crank where the fly wheel/ flex plate goes.
* G series all have a 6 bolt pattern on the crank

* J18 fly wheel is the same thickness and diameter as the G16 flywheel. (bigger than a G13 flywheel)
* J20 is bigger than the J18 fly wheel.

Some points i'd like to find out if I can

1. are the H series cranks the same 8 bolt pattern as the J series
2. do the H series autos use a combined ecu/tcm or are they separate the same as g16 auto tcms.

Author:  henno [ Tue Dec 23, 2014 6:56 pm ]
Post subject:  Re: h motor, j motor, g motor comparison

1. There are 8 bolts on an H25a/H27a flex plate

Author:  tanshi [ Tue Dec 23, 2014 7:55 pm ]
Post subject:  Re: h motor, j motor, g motor comparison

Hmm wonder if its the same spacing

Author:  atari4x4 [ Tue Dec 23, 2014 8:03 pm ]
Post subject:  Re: h motor, j motor, g motor comparison

i can get a rough pcd off the h25/27 flywheel or off the crank.

will get those h27 int/exh port pics uploaded to. :oops:

Author:  tanshi [ Tue Dec 23, 2014 8:23 pm ]
Post subject:  Re: h motor, j motor, g motor comparison

Basically im hoping I can get a manual car or an auto. And just adapt the gearbox I already have

Author:  fordem [ Wed Dec 24, 2014 12:11 am ]
Post subject:  Re: h motor, j motor, g motor comparison

tanshi wrote:
2. do the H series autos use a combined ecu/tcm or are they separate the same as g16 auto tcms.


It may depend on the market the car was built for, but as far as I know, it's a combined PCM (powertrain control module), but, the transmission is the same so you could use the G16 controller once you work out how the two communicate - if I recall correctly there was someone on here building a circuit to do just that..

Author:  tanshi [ Wed Dec 24, 2014 7:48 am ]
Post subject:  Re: h motor, j motor, g motor comparison

yeah Jrzook is a mate of mine.

He just needs to pull his finger out

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