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Location:
Lost in the K hole
Registered:
May 2002
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 4A-GE 16v/20v Valve Springs...
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Mon, 07 October 2002 11:46
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Anyone (Bill Sherwood  )...
have a clue about the
-uninstalled height
-installed height
-installed tension
-outside diameter (important)
-stock valave lift
of 4A-GE valave springs?
cheers
ed
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Location:
Brisbane / Gold Coast
Registered:
May 2002
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Re: 4A-GE 16v/20v Valve Springs...
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Mon, 07 October 2002 12:32
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Got some of that info ..
(From the 16v manual)
- Free height 41.09mm
- Installed length 34.7mm
- Installed load 15.8kg, limit 14.6kg
- Squareness limit 1.8mm
I can measure up the OD of the springs tomorrow for you, but at a guess I'd ay about 25mm.
The stock lift of most of the 4AGE cams is between 7.1mm - 7.5mm
For the 20v info, look here for the manual - http://www.onthenet.com.au/~paulp/Blacktop/
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Location:
Lost in the K hole
Registered:
May 2002
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Re: 4A-GE 16v/20v Valve Springs...
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Tue, 08 October 2002 06:35
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bill, GREAT info, thankyou...
if you could get back to me on the OD, that would be great.
they're a little lighter than i expected i have to admit tho 
cheers
ed
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Location:
Brisbane / Gold Coast
Registered:
May 2002
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Re: 4A-GE 16v/20v Valve Springs...
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Tue, 08 October 2002 12:18
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(slaps head)
Buuger! Guess what I forgot to do today .... I'll do it tomorrow, promise .... 
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I supported Toymods
Location:
melbourne.victoria.austra...
Registered:
June 2002
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Re: 4A-GE 16v/20v Valve Springs...
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Tue, 08 October 2002 20:28
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i can do this too i have a set at home sitting on top of my computer. will do tonite.
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Location:
Brisbane / Gold Coast
Registered:
May 2002
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Re: 4A-GE 16v/20v Valve Springs...
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Wed, 09 October 2002 12:38
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I measured them up tonight, and the 16v ones are 23.5mm diameter. I have some 20v ones lying around but I can't find them, sorry. I'd guess somewhere between 19mm - 20mm for them though.
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I supported Toymods
Location:
melbourne.victoria.austra...
Registered:
June 2002
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Re: 4A-GE 16v/20v Valve Springs...
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Thu, 10 October 2002 07:02
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yep, i concur.
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Location:
Lost in the K hole
Registered:
May 2002
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I supported Toymods
Location:
melbourne.victoria.austra...
Registered:
June 2002
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Re: 4A-GE 16v/20v Valve Springs...
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Thu, 10 October 2002 20:37
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i have a set of these exact things at home.
T - where did they come from?
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Location:
Brisbane / Gold Coast
Registered:
May 2002
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Re: 4A-GE 16v/20v Valve Springs...
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Thu, 10 October 2002 23:01
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I'm using Performance Springs springs in my engine, and they're good for about 0.420" lift, or just under 11mm.
I'm running 38 pounds on the seat and it revs to 8600rpm no problems at all.
I got them from Kelford Cam on the Gold Coast.
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Location:
Lost in the K hole
Registered:
May 2002
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Re: 4A-GE 16v/20v Valve Springs...
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Fri, 11 October 2002 02:13
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bill,
is that custom to your req's or are those springs a stock type item that these guys have on shelf?? (not that there's much difference )
prices?
cheers'
ed
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Location:
Brisbane / Gold Coast
Registered:
May 2002
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Re: 4A-GE 16v/20v Valve Springs...
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Fri, 11 October 2002 07:50
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All off the shelf stuff. I can't remember the cost but I thought it was pretty good at the time.
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I supported Toymods
Location:
melbourne.victoria.austra...
Registered:
June 2002
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Re: 4A-GE 16v/20v Valve Springs...
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Fri, 11 October 2002 09:56
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zact same ones i have bill
ed - any chance u want mine - i have no use for them.
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Location:
Lost in the K hole
Registered:
May 2002
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Re: 4A-GE 16v/20v Valve Springs...
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Fri, 11 October 2002 09:57
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sounds like i might have to give them a ring.
you were saying that they are only 38lbs installed? that is rather light i would have thought... you rev it out to 8600 but have no problems... running what lift? what buckets are you using? SUB i assume?
im only looking at a redline of ~7600 and stock 7m springs (same dimensional spec) are about 35lb (6500 redline)... was hoping to go a little heavier than 38lbs on the upgrade. any thoughts?
cheers
ed
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Location:
Lost in the K hole
Registered:
May 2002
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Re: 4A-GE 16v/20v Valve Springs...
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Fri, 11 October 2002 10:00
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grega:
what exactkly do you have you got sitting there??
i could be VERY interested indeed (though i do need 24 of the suckers eventually!)
cheers
ed
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Location:
Brisbane / Gold Coast
Registered:
May 2002
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Re: 4A-GE 16v/20v Valve Springs...
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Fri, 11 October 2002 11:58
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I chose 38 pounds as that's all I reckoned I needed.
I'll still be using that for hte next engine, which will have 33mm inlet valves and run to 9600rpm. 
The cams I'm using now are ~0.380" lift.
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Location:
Lost in the K hole
Registered:
May 2002
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Re: 4A-GE 16v/20v Valve Springs...
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Sat, 12 October 2002 04:08
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ok, thanks bill...
im looking in the realm of ~0.400" and 7600-7800rpm
the 38lbs could be ok i think on the exhaust side which is only running ~27mm valves. think i might go a little heavier (+45lbs?) on the intake side w/ 32mm valves.
grega: whats the story with the springs youve got there? they might be the perfect addition for the exhaust cam/valves, then i only have to buy new springs for the intake side...
cheers
ed
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Location:
Brisbane / Gold Coast
Registered:
May 2002
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Re: 4A-GE 16v/20v Valve Springs...
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Sat, 12 October 2002 10:22
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Those pressures should work fine, though it also depends on the opening & closing rates of the cam. The lift is no big deal, but if the cam has a small duration then the ramps are pretty savage and so the acceleration rates up & down may exceed what the spring can handle, on the other hand, if the cam has lots of duration with that lift, the ramps will be a lot easier on the springs and so they'll take it no probs.
Glad I could help .....
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Location:
Lost in the K hole
Registered:
May 2002
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Re: 4A-GE 16v/20v Valve Springs...
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Sat, 12 October 2002 12:43
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- ~0.400" lift
- ~280-296 duration
cheers
ed
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Location:
Brisbane / Gold Coast
Registered:
May 2002
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Re: 4A-GE 16v/20v Valve Springs...
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Sat, 12 October 2002 13:32
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That's only a little bigger than mine, so it should be fine.
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I supported Toymods
Location:
melbourne.victoria.austra...
Registered:
June 2002
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Re: 4A-GE 16v/20v Valve Springs...
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Sat, 12 October 2002 21:08
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i have no idea i scored them as part of a deal i'll try and find out - they're prolly the same as what bill got..
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Location:
Lost in the K hole
Registered:
May 2002
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Re: 4A-GE 16v/20v Valve Springs...
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Sun, 13 October 2002 01:33
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grega:
can you find out for me? that would be great. depending what you find out about the spec, ill definitely take them off you.
cheers
ed
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