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What is the maximum valve lift
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07-04-2008, 10:14 PM
Post: #1
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What is the maximum valve lift
possible with a standard blue top bottom end ?
(I have the bucket situation already sorted !!) Thanks An analogue brain in a digital World |
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07-04-2008, 11:02 PM
Post: #2
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What is the maximum valve lift
well I run 9mm lift cams on a standard bottom end. Heard of Bill (billzilla) he had a 9.4mm lift on standard engine.
I wouldn't go higher than 9 just for safe keeping. Cars: "99 Lexus IS200 "86 AE86 Kouki Panda Levin GT-Apex (restore project) "84 AE86 Zenki Blue Levin (project racer) Motorcycles: "02 Yamaha R1 "02 Honda Hornet S "08 BMW R1200GS |
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07-05-2008, 04:14 PM
Post: #3
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What is the maximum valve lift
Paz ran 10mm on an AE92 bottom end.
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07-06-2008, 02:38 AM
Post: #4
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What is the maximum valve lift
Supposedly it is 8.1mm with standard buckets.
Fully Restored 1985 Corolla GT-S 1987 328ci SR20DET Drift Car 1989 Honda Civic Si-R Current Project 2002 Corolla CE Daily Driver http://www.TheTunerSource.com |
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07-06-2008, 03:50 AM
Post: #5
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What is the maximum valve lift
I'm running toda 288 8.5mm lift with stock bottom end and stock buckets ....
I would say if you have the buckets sorted and the head machined for high lift cams to clear there is no limit in lift ..... the engine might become intrusive ( if you break the cambelt your screwed) but apart from that, I don't see any limit ..... |
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07-06-2008, 05:58 AM
Post: #6
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What is the maximum valve lift
you can run any cam on a stock bottom end... its the cylinder head that needs the attention to (mechanically) run a wild cam.
Stock valve springs... are said to bind somewhere close to 8.0mm of valve lift (not cam lift... valve lift will be less - the amount of the clearence) I recommend doing some study on dynamic compression ratio, and how cam duration/timing can affect DCR. Concerning lift... besides spring bind at about 8mm, there is also the bucket towers... somehwere @ or near 10mm of cam lift the bucket towers need to be machined so the cams can turn in their journals Dan - You can |  .... OR you can ask for help!!!OST Porting service - http://hachiroku.net/forums/showthread.php?t=19991 |
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07-06-2008, 12:13 PM
Post: #7
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What is the maximum valve lift
oldeskewltoy Wrote:Concerning lift... besides spring bind at about 8mm, there is also the bucket towers... somehwere @ or near 10mm of cam lift the bucket towers need to be machined so the cams can turn in their journalsCan you tell me if this is a simple grinding operation to get the clearance or one that would require specialist machining. An analogue brain in a digital World |
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07-06-2008, 09:47 PM
Post: #8
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What is the maximum valve lift
Not sure what it requires....
...but if you are asking if I would attempt to do this... I'd say, nope... let a professional machinist do it. The key(GUESSING) is knowning how much cam passes, so you can determine how much tower needs to be shaved.... Dan - You can | .... OR you can ask for help!!!OST Porting service - http://hachiroku.net/forums/showthread.php?t=19991 |
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07-07-2008, 08:10 AM
Post: #9
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What is the maximum valve lift
the highest i seen was 10.80mm lift from toda... im only using 8.9mm by toda but i do have a toda valve train
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07-13-2008, 09:25 PM
Post: #10
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What is the maximum valve lift
Yeah valve lift is the source of the true power of the 4AGE.
Fully Restored 1985 Corolla GT-S 1987 328ci SR20DET Drift Car 1989 Honda Civic Si-R Current Project 2002 Corolla CE Daily Driver http://www.TheTunerSource.com |
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