Highest RPM a hydraulic setup has spun up to!!!
10-10-2002, 06:33 PM
#2
Re: Highest RPM a hydraulic setup has spun up to!!! Didn't the SAM car reach 7,500 or so with a hydraulic cam??
<img border="0" alt="[Firebird]" title="" src="graemlins/formula.gif" />
<img border="0" alt="[Firebird]" title="" src="graemlins/formula.gif" />
10-10-2002, 07:07 PM
#4
Re: Highest RPM a hydraulic setup has spun up to!!! </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Pro Stock John:
<strong>7400 on the dyno.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">SAM or You?
I would assume your rev limiter should have kicked in before 7400, <img border="0" title="" alt="[Eek!]" src="gr_eek2.gif" /> not mention you dyno unlocked, thus resulting in bogus rpm numbers. <img border="0" title="" alt="[Razz]" src="gr_tounge.gif" />
<strong>7400 on the dyno.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">SAM or You?
I would assume your rev limiter should have kicked in before 7400, <img border="0" title="" alt="[Eek!]" src="gr_eek2.gif" /> not mention you dyno unlocked, thus resulting in bogus rpm numbers. <img border="0" title="" alt="[Razz]" src="gr_tounge.gif" />
10-10-2002, 08:19 PM
#6
TECH Resident
Join Date: Nov 2001
Location: houston
Posts: 768
Likes: 0
Received 0 Likes
on
0 Posts
Re: Highest RPM a hydraulic setup has spun up to!!! ive heard of some hitting 8200 or so, but it has "special" parts and aint your ordinary stuff..
mine has hit over 7000 i know for sure. but i limit it to 6800 because it wasnt making the power up there.
steve frank
mine has hit over 7000 i know for sure. but i limit it to 6800 because it wasnt making the power up there.
steve frank
10-10-2002, 09:33 PM
#7
TECH Junkie
iTrader: (7)
Join Date: Nov 2001
Location: From the Bowels of Hell!!! You want some of me bitch?!?!?!
Posts: 3,378
Likes: 0
Received 1 Like
on
1 Post
Re: Highest RPM a hydraulic setup has spun up to!!! Thunder dynoed my car the other day and they said the rev limiter never kicked in at even 7600. Said the car was still pullin' up there too.
Tim
Tim
Trending Topics
10-11-2002, 02:28 AM
#9
TECH Senior Member
iTrader: (18)
Join Date: Jun 2002
Location: NW Houston, TX
Posts: 10,036
Likes: 0
Received 0 Likes
on
0 Posts
Re: Highest RPM a hydraulic setup has spun up to!!! </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Ryan:
<strong>347's have gone 8000-8500 i belive.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Thats a lot of rpm's, what crank and rods are you people running out there. I know valve train bracing was involed. <img border="0" alt="[kaboom]" title="" src="graemlins/gr_bomb.gif" />
<strong>347's have gone 8000-8500 i belive.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Thats a lot of rpm's, what crank and rods are you people running out there. I know valve train bracing was involed. <img border="0" alt="[kaboom]" title="" src="graemlins/gr_bomb.gif" />
10-11-2002, 08:49 AM
#10
SSU Moderator
Join Date: Nov 2001
Location: Austin, TX
Posts: 4,857
Likes: 0
Received 0 Likes
on
0 Posts
Re: Highest RPM a hydraulic setup has spun up to!!! its all in the cam/springs. with stock ford lifters they can hit ~7600, with titainium retainers, etc, 8200rpm.
10-11-2002, 08:57 AM
#11
TECH Addict
Re: Highest RPM a hydraulic setup has spun up to!!! Proper lifter preload is what allows 7000+ rpms.Ultimately you need adjustable valvetrain to make hydraulics spin to there max rpm before collapsing or pumping up limits rpm.Lightening all parts makes it easier by allowing less valve spring tension.
10-11-2002, 03:18 PM
#14
Moderator
Thread Starter
iTrader: (5)
Join Date: Nov 2001
Location: Montgomery Texas
Posts: 5,585
Likes: 0
Received 0 Likes
on
0 Posts
Re: Highest RPM a hydraulic setup has spun up to!!! What determines what rpm to run and what will happen if you go to high with it? (The worst)???
10-11-2002, 04:19 PM
#15
TECH Addict
Re: Highest RPM a hydraulic setup has spun up to!!! Ultimately you want to rev motor 400 to 600 rpm above its peak hp to utilize the sweetest part of your power curve for drag racing. If you over rev motor worst case scenario you will loose control of valves and lifters will pump up to compensate, than the valves are stuck open and can easily hit pistons as this happens. NOt good! <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />
10-11-2002, 09:58 PM
#17
TECH Addict
Re: Highest RPM a hydraulic setup has spun up to!!! Is my answer not what you are looking for? <img border="0" title="" alt="[Roll Eyes]" src="images/icons/rolleyes.gif" />
10-17-2002, 10:34 AM
#19
Re: Highest RPM a hydraulic setup has spun up to!!! </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by LS1derfull:
<strong>Proper lifter preload is what allows 7000+ rpms.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">How does a person go about knowing what the proper preload is and how do you set it (provided you have adjustable rockers)?
<strong>Proper lifter preload is what allows 7000+ rpms.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">How does a person go about knowing what the proper preload is and how do you set it (provided you have adjustable rockers)?
10-17-2002, 04:04 PM
#20
Moderator
Thread Starter
iTrader: (5)
Join Date: Nov 2001
Location: Montgomery Texas
Posts: 5,585
Likes: 0
Received 0 Likes
on
0 Posts
Re: Highest RPM a hydraulic setup has spun up to!!! Good question....?? <img border="0" title="" alt="[Confused]" src="images/icons/confused.gif" />