Page 1 of 2 12 LastLast
Results 1 to 15 of 18

Thread: 4age 16v questions

  1. #1
    say yes to boobs Grease Monkey mc68's Avatar
    Join Date
    Oct 2005
    Location
    WA
    Posts
    130

    Default 4age 16v questions

    ok, i know this has been covered a zillion times in the past. but, i am slow, too slow to work out the search function.

    anyway...to all the guys who run higher lift camshafts, what sort of modifications did you do (if any) to eliminate float, ofcourse you got shims and springs to suit, but did you do the 'bucket under shim'?

    to my disappointment, i havent even got round to taking the cam covers off my 4age, to see what design it currently has, so what does one do to run long duration higher lift cams safely? ie 288's with 9.5mm lift.

    Any help would be much appreciated

    Andy.

  2. #2
    Junior Member Grease Monkey
    Join Date
    Dec 2005
    Location
    NSW
    Posts
    119

    Default Re: 4age 16v questions

    You change the ratainers, springs, valve stems. I think that's it. If you goto a good rebuild shop they shold be able to tell you.

  3. #3
    Junior Member Grease Monkey
    Join Date
    Dec 2005
    Location
    NSW
    Posts
    119

    Default Re: 4age 16v questions

    O also the guides

  4. #4
    say yes to boobs Grease Monkey mc68's Avatar
    Join Date
    Oct 2005
    Location
    WA
    Posts
    130

    Default Re: 4age 16v questions

    ah thats pretty simple then, i thought it was something more major, thankies

  5. #5
    Junior Member Domestic Engineer BigWorm's Avatar
    Join Date
    Jul 2005
    Location
    SA
    Posts
    650

    Default Re: 4age 16v questions

    Quote Originally Posted by limbo
    You change the ratainers, springs, valve stems.

    I don't know why you need to change the retainers, or how to change a valve stem without changing the whole valve.....

    I would use new valve springs from one of our friendly sponsors: http://www.performancesprings.com.au/ which cost about $150 (I think less) with a Toymods discount, and then use this guide here: http://www.club4ag.com/faq%20and%20t...%20Tuning.html to choose some suitable 1sz-fe shimless buckets.
    Then purchase them from here: http://www.penrithtoyota.com.au/
    another of our helpful sponsors.

  6. #6
    say yes to boobs Grease Monkey mc68's Avatar
    Join Date
    Oct 2005
    Location
    WA
    Posts
    130

    Default Re: 4age 16v questions

    thankyou very much sir...now i need to get around measuring suitable buckets...which i have no idea how to do :\

    edit, the part numbers on the club4ag site, are they indenticle with the ones sold here?
    Last edited by mc68; 26-01-2006 at 01:26 PM.

  7. #7
    Forum Member 1st year Apprentice
    Join Date
    Jan 2006
    Location
    qld
    Posts
    6

    Default Re: 4age 16v questions

    Why are you changing the buckets?
    I have been running shim over bucket on .380 in lift for years with no ill effects. Just fit your new cams and shim to suit.

  8. #8
    say yes to boobs Grease Monkey mc68's Avatar
    Join Date
    Oct 2005
    Location
    WA
    Posts
    130

    Default Re: 4age 16v questions

    well im not sure why, but if im investing abit in to this engine i dont want it to go into meltdown

    ive just seen a few high lift cams on wrx's drop a shim (could be to the nature of the boxer) but obviously not a common problem with these 4a's?

  9. #9
    Junior Member Grease Monkey Cruiser97_80's Avatar
    Join Date
    Dec 2005
    Location
    Tasmania
    Posts
    186

    Default Re: 4age 16v questions

    i have never seen a shim fall out of a toyota engine yet. They are hard enough to get out at the best of times.
    Last edited by Cruiser97_80; 27-01-2006 at 01:04 AM. Reason: spelling

  10. #10
    Forum Member 1st year Apprentice
    Join Date
    Jan 2006
    Location
    qld
    Posts
    6

    Default Re: 4age 16v questions

    I have also invested in these motors since 1990 and have used an 8000rpm change point with the same valvetain, forged pistons, quads, autronic,145rwhp, c/r gearset and 5.1:1 diff ratio. If you were talking 500 thou lift then I would recommend under bucket shims.
    Cheers.:

  11. #11
    say yes to boobs Grease Monkey mc68's Avatar
    Join Date
    Oct 2005
    Location
    WA
    Posts
    130

    Default Re: 4age 16v questions

    thanks guys, nows its time to weigh up my options

    cheers for your help.

  12. #12
    :( Backyard Mechanic stahlz_ae86's Avatar
    Join Date
    Feb 2006
    Location
    Victoria
    Posts
    274

    Default Re: 4age 16v questions

    Quote Originally Posted by Cruiser97_80
    i have never seen a shim fall out of a toyota engine yet. They are hard enough to get out at the best of times.
    The 4AGE I bought specifically for re-build, had a sticking (very slightly bent) valve due to the shim coming out of the top of bucket. This was evident as it had damage around the edge from where the (inlet) camshaft had impacted it while out of place.

  13. #13
    Junior Member Domestic Engineer RobertoX's Avatar
    Join Date
    Nov 2005
    Location
    Victoria
    Posts
    511

    Default Re: 4age 16v questions

    I don't know why you need to change the retainers, or how to change a valve stem without changing the whole valve.....

    I would use new valve springs from one of our friendly sponsors: http://www.performancesprings.com.au/ which cost about $150 (I think less) with a Toymods discount, and then use this guide here: http://www.club4ag.com/faq%20and%20t...%20Tuning.html to choose some suitable 1sz-fe shimless buckets.
    Then purchase them from here: http://www.penrithtoyota.com.au/
    another of our helpful sponsors.
    also check out the writeup on toymods, its a pretty good read:

    http://www.toymods.net/forums/showthread.php?t=4385

  14. #14
    back into it Chief Engine Builder
    Join Date
    Mar 2006
    Location
    nsw
    Posts
    3,991

    Default Re: 4age 16v questions

    Quote Originally Posted by mc68
    ok, i know this has been covered a zillion times in the past. but, i am slow, too slow to work out the search function.

    anyway...to all the guys who run higher lift camshafts, what sort of modifications did you do (if any) to eliminate float, ofcourse you got shims and springs to suit, but did you do the 'bucket under shim'?

    to my disappointment, i havent even got round to taking the cam covers off my 4age, to see what design it currently has, so what does one do to run long duration higher lift cams safely? ie 288's with 9.5mm lift.

    Any help would be much appreciated

    Andy.
    other way round, shim under bucket. shim over is stock setup.

    you change the retainers because of the extra loading, stronger is better.even standard lift with a stock motor they stretch.

    very good quailty springs, they get a hard time with loads of lift and revs.

    quailty bronze guides.

    depends on the lift and revs and your budget.

    on high lift cams the cam lobe ramps harshly so it hammers itself against the side of the bucket and spits the shims of the top of the stock cam buckets.

    saftey 8.5mm over this and you have no saftey margin at all! for a stock setup with good springs and retainers.
    hope that helps

  15. #15
    AVGAS DRINKING Carport Converter 30psi 4agte's Avatar
    Join Date
    Feb 2006
    Location
    S.A
    Posts
    1,457

    Default Re: 4age 16v questions

    just make sure that you do change the valve springs if you are to run more lift.

    I think that the stock ones bind at around 8.3-8.5mm

Similar Threads

  1. 4AGE -> AE86 Conversion: Accessories question
    By Wiggles in forum Tech and Conversions
    Replies: 21
    Last Post: 17-06-2008, 08:53 PM
  2. 4AGE 100kw smallport turbo rebuild
    By BoostBoy in forum Tech and Conversions
    Replies: 94
    Last Post: 07-05-2007, 10:24 PM
  3. Shims for Cam bucket?! Are JDM 4AGE same as AUDM 4AGE?????
    By beige_bandit in forum Tech and Conversions
    Replies: 6
    Last Post: 19-01-2006, 11:08 AM
  4. 4AGE cooling system - an observation
    By roadsailing in forum Tech and Conversions
    Replies: 1
    Last Post: 18-12-2005, 11:01 AM
  5. 20v 4AGE into AE92
    By dale_8888 in forum Tech and Conversions
    Replies: 1
    Last Post: 16-12-2005, 04:51 PM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •