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I supported Toymods
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I renounced punctuation
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May 2002
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I supported Toymods
Location:
I renounced punctuation
Registered:
May 2002
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Location:
gold coast
Registered:
May 2002
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Re: 2jzge rod length and piston comp height
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Wed, 22 May 2002 23:17
 
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Same compression height as 1J, dave. Nice.
The 1j should be easy to get pistons for.
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Location:
melbourne
Registered:
May 2002
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Re: 2jzge rod length and piston comp height
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Thu, 23 May 2002 07:19
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hey dave sure its not 138 mm center to center
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Location:
Sydney
Registered:
May 2002
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Re: 2jzge rod length and piston comp height
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Fri, 24 May 2002 11:31
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Dave/Pete
Do either of you know if IJZGTE and 2JZGTE Camshafts and cam sprockets are interchangeable?
Also anyone know Inlet and Exhaust cam lift and duration specs for JDM 1J and 2Js?
Thanks
Manny
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Location:
gold coast
Registered:
May 2002
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Cam Cogs
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Fri, 24 May 2002 11:37
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The answer is yes. the 2j and 1j share the same cam cogs. (according to HKS japan)
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I supported Toymods
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Re: 2jzge rod length and piston comp height
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Fri, 24 May 2002 11:47
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Manny, I can't tell you much about 1J stuff, but I did post the 2JZGE and GTE cam specs in the old forums. In a post above I linked that thread to this thread so it should be there for you. Unfortunately, I can't tell you what diameter the 2JZ cam journals are as my cams are off being....er....improved, but I suspect they are the same as a 1J. Maybe Pete has had his 1JZ cams profiled.
Definitely 141 mm Glenn.
Cheers Dave.
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Location:
Sydney
Registered:
May 2002
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I supported Toymods
Location:
I renounced punctuation
Registered:
May 2002
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Re: 2jzge rod length and piston comp height
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Fri, 24 May 2002 12:48
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Sorry Manny, export (US market cams). I'm not sure how you worked out the durations but I get 233 (3 + 180 +50) for the inlet and 236 (52 + 180 + 4) for the exhaust. When I looked at that article and cross referenced, I see they quote the US inlet cam having the very specs I mentioned!
My GE cams had the same lifts as those quoted when I checked with my dial indicator.
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Location:
Sydney
Registered:
May 2002
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Re: 2jzge rod length and piston comp height
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Fri, 24 May 2002 14:54
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Dave
Apologies, I misinterpreted your comment "Valve lift between the two are identical, and duration is 233 degrees" as meaning both were 233 degrees - did not actually do the math as you did.
Anyone got specs or can confirm them for JDM 2J/1J CAMS?
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Location:
gold coast
Registered:
May 2002
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Re: 2jzge rod length and piston comp height
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Sat, 25 May 2002 09:17
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Sorry manny, i do not have the specs for the 1j's cams. They do share the same lift!!
I'd say bulid your engine, then change your cams if you find your combo lacking at a certain rev/load range.
The cams are easy to change with the motor in the car.
BTW: when you get a price on some aftermarket cam sprockets, post it up.
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I supported Toymods
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Re: 2jzge rod length and piston comp height
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Sat, 25 May 2002 09:52
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I got some custom adjustable cam sprokets made for about $250. Any machine shop should be able to do this for you. Sure beats the $500 USD quoted by HKS and JUN! Unorthidox racing and some other Yank mob also make them but they are around $300 USD + delivery.
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Location:
gold coast
Registered:
May 2002
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Just a Q, Dave??
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Sat, 25 May 2002 10:00
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Did you get 2 of them made, or just an exhaust sprocket?
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Location:
melbourne
Registered:
May 2002
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Re: Just a Q, Dave??
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Sat, 25 May 2002 10:53
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he got both done pete
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I supported Toymods
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Re: Just a Q, Dave??
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Sun, 26 May 2002 09:31
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I got both done Pete. If you do get some aftermarket jobbies, then according to the dudes on Supraforums, the five bolt ones are the go.
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Location:
Sydney
Registered:
May 2002
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Re: Just a Q, Dave??
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Tue, 28 May 2002 13:23
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Pete
Did some ringing around today on the adjustable 1J/2J cam gears.
BD4s
HKS Alloy $ 282.00 each
Croydon Autosport
HKS Alloy $ 280.00 each
JUN Steel $ 320.00 each
Speedworks WA
JUN Steel $550.00 each
On the web:-
AEM Alloy $150 USD pair
http://www.aempower.com/cam_gears.htm
Advice from a mechanic mate and also Jim at Croydon Autosports is to go for Steel cam gears rather than Alloys. Both reported problems with HKS alloy cam gears wearing both the gear and belts over time leading to unecessary replacement of both.
Consensus seem to be that only exhaust side really needs replacing as intake adjustment will yield negligible power/torque increases.
The steel JUN units from CAS seems very good value for money compared to Speedworks!
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I supported Toymods
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Cam gears
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Wed, 29 May 2002 16:59
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That's an excellent price on the JUN cam gears, Manny.
Very true regarding power gains.....with the 2JZGE and stock cams, 14 hp maximum gain from the exhaust gear alone and a further 4 from the intake. Apparently this is increased when bigger cams are used. Claims of 50 plus horsepower when both camgears are replaced and correctly adjusted on the 2JZGTE and HKS 272 cams.
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Location:
Sydney
Registered:
May 2002
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