User Login    
 + Register
  • Main navigation
Main Menu
Login
Username:

Password:


Lost Password?

Register now!
Fast Search
Slow Search

Advanced Search
Google Ad

Browsing this Thread:   1 Anonymous Users



(1) 2 »


killer1200
Valve Spring Video Very Interesting
#1
No life (a.k.a. DattoMaster)
Joined:
2004/5/28 5:02
From Adelaide, South Australia
Group:
Registered Users
Posts: 1817
Offline
We talk about springs alot on this site and some people have trouble believing just how hard they work as well as how important they are.

This will show you.

Triple coil springs at 7000 rpm.

An A series at that rpm with stock springs doesnt stand a chance.

Link

Posted on: 2007/3/8 17:41
_________________
"Anyone who has never made a mistake has never tried anything new"

Albert Einstein

Put stupid oversized photo here>>
Transfer the post to other applications Transfer


TnPshow
Re: Valve Spring Video Very Interesting
#2
No life (a.k.a. DattoMaster)
Joined:
2002/8/22 11:10
From Adelaide, SA
Group:
Registered Users
Posts: 1991
Offline
Cool vid - it looks like a slinky

Posted on: 2007/3/8 18:01
Transfer the post to other applications Transfer


pager
Re: Valve Spring Video Very Interesting
#3
Home away from home
Joined:
2003/3/21 0:15
From Tamworth, NSW
Group:
Registered Users
Posts: 850
Offline
Thats cool.
I am sure my stock a12 saw more that 7000 rpm Had a throttle that jamed it self a few times mid donut

Posted on: 2007/3/8 18:11
_________________
Project coupe:
Just drive it
Transfer the post to other applications Transfer


WhiteSedan
Re: Valve Spring Video Very Interesting
#4
No life (a.k.a. DattoMaster)
Joined:
2004/7/15 12:10
From Adelaide, Australia
Group:
Registered Users
Posts: 3931
Offline
Far out! Cheers!

Posted on: 2007/3/8 18:24
_________________
cheap + fast = disaster
fast + reliable = expensive
cheap + reliable = stock

IPRA Build
Transfer the post to other applications Transfer


Ronald
Re: Valve Spring Video Very Interesting
#5
Home away from home
Joined:
2005/12/7 4:37
From Bendigo, Victoria, Australia.
Group:
Registered Users
Posts: 781
Offline
when i grow up i (don't) wanna be a valve spring!

Posted on: 2007/3/8 19:06
_________________
"Like a Rolling Stone"
Bob Dylan

New Daily: <<<<Now For Sale.
1972 B110, 13" Bathurst mags, airbrus
Transfer the post to other applications Transfer


blofly
Re: Valve Spring Video Very Interesting
#6
Home away from home
Joined:
2005/9/5 14:02
From Bunbury Western Australia
Group:
Registered Users
Posts: 668
Offline
wow looks so soft and weak! I am sure it's as stiff as my mother in laws upper lip though!
Is it true that if you over heat your engine even slightly you can soften the competition valve springs causing them to not be able to let the engine rev as much as before?

Posted on: 2007/3/8 20:03
_________________
Two things that drive me nuts.....a dry road under a grey sky and a wet road under a blue sky, because no matter what, it's either too soon or too late to drive the way I want
Transfer the post to other applications Transfer


matty
Re: Valve Spring Video Very Interesting
#7
No life (a.k.a. DattoMaster)
Joined:
2003/3/28 14:44
From brisbane
Group:
Registered Users
Posts: 1880
Offline
Excellent video killer. Thanks for posting that up.

Posted on: 2007/3/8 20:10
_________________
1985 CA18DET Datsun 1200 ute
1969 A12 Datsun 1000 coupe
Transfer the post to other applications Transfer


killer1200
Re: Valve Spring Video Very Interesting
#8
No life (a.k.a. DattoMaster)
Joined:
2004/5/28 5:02
From Adelaide, South Australia
Group:
Registered Users
Posts: 1817
Offline
Quote:
Is it true that if you over heat your engine even slightly you can soften the competition valve springs causing them to not be able to let the engine rev as much as before?


Very very true.This is not so much the case in a road car but in a race car.

Look at pro stock cars they rev them to 8900 on a dyno but on the track they take them up to 9400.That 500 more rpm 1/2s the life of the spring.

Thats why alot of cars run spring oilers.(This is plumbing system where there are jets that put oil right on to the spring)

Posted on: 2007/3/8 20:27
_________________
"Anyone who has never made a mistake has never tried anything new"

Albert Einstein

Put stupid oversized photo here>>
Transfer the post to other applications Transfer


Curtis
Re: Valve Spring Video Very Interesting
#9
Home away from home
Joined:
2006/7/24 11:29
From Sydney
Group:
Registered Users
Posts: 553
Offline
I very Frequently take my stock internal a14 to 7500 with no problem, just had the head reco'd and all the springs tested fine. those race pp'l sure do some stange things in search of such small amounts of power. personaly if ur car is still loseing id be searching for a better driver not more power lol

Posted on: 2007/3/8 20:35
Transfer the post to other applications Transfer


sikyne
Re: Valve Spring Video Very Interesting
#10
No life (a.k.a. DattoMaster)
Joined:
2006/6/4 1:57
From Ballarat Victoria
Group:
Registered Users
Posts: 1309
Offline
Just thought I`d mention probably the cheapest way to increase the RPM before valve float with the A series is to use a set of second hand red motor (6 cyl) inner springs to double up with. I cant remember the rate increase, but wasnt too much to cause undue stress on things.
If someone needs to know the exact rate i can test one..

Posted on: 2007/3/9 1:40
_________________
VIC DYNO HIRE
Transfer the post to other applications Transfer



(1) 2 »



You can view topic.
You cannot start a new topic.
You cannot reply to posts.
You cannot edit your posts.
You cannot delete your posts.
You cannot add new polls.
You cannot vote in polls.
You cannot attach files to posts.
You cannot post without approval.

[Advanced Search]