View Full Version : 918 valve spring fitment
Goodaye guys. Just thought we would put up a few pics on replacing valve springs on the LS engine. Fairly easy job if you have all the right tools. But if you haven't, don't try this at home. It could end up in tears. Will get JT to put up the pics:thumbsup:
http://home.wildit.net.au/jt/jan07006.jpg
http://home.wildit.net.au/jt/jan07007.jpg
http://home.wildit.net.au/jt/jan07008.jpg
http://home.wildit.net.au/jt/jan07009.jpg
brentonsav
25-01-2007, 06:45 AM
nice work there chev... ;)
no more valve float now!
fyreblade2000
25-01-2007, 06:47 AM
Goodaye guys. Just thought we would put up a few pics on replacing valve springs on the LS engine. Fairly easy job if you have all the right tools. But if you haven't, don't try this at home. It could end up in tears. Will get JT to put up the pics:thumbsup:
He's preping for a cam isn't he!!?:p
He's preping for a cam isn't he!!?:p
yep hehe (oh,it's not mine)
brentonsav
25-01-2007, 06:50 AM
He's preping for a cam isn't he!!?:p
tis my car.
one day the cam will happen but did it to get rid of the valve float i had from day one... also gotta do tex before cam...
the dyno chart with the two curves would also be good to show chev but my copy is at home and i dont have it scanned.
tis my car.
one day the cam will happen but did it to get rid of the valve float i had from day one... also gotta do tex before cam...
the dyno chart with the two curves would also be good to show chev but my copy is at home and i dont have it scanned.
Don't lie,it's your desktop isn't it
brentonsav
25-01-2007, 06:56 AM
Don't lie,it's your desktop isn't it
not yet, maybe after the next visit to chevs
thanks for posting the pics jt! there must be nothing you cant do!
macca33
25-01-2007, 11:36 AM
Good job there Chev and JT.
Chev - I used the Snap-on type screw down single spring compressor to do mine and it worked okay.......but, what kinda $$$ for the Crane tool?
brentonsav - so it was you who tripped over my kids the day you brought your car into Chev's? Very nice clean ride that. Enjoy and start saving for the cam!!!
Cheers,
Macca
brentonsav
25-01-2007, 11:49 AM
nah mate, wasnt me...
but next time your around chev's, id love to know and have u take me for a squirt in the cammed senator.
EDIT:
actually on second thoughts, you car was there and so were your kids... i remember now. its when i dropped it off the other week for my service and valve springs
macca33
25-01-2007, 11:59 AM
Yep, that is correct mate.
I'll be back in May and I'll be heading in to see Chev for a couple of things - so I'll arrange a date closer to then.
Cheers
Good job there Chev and JT.
Chev - I used the Snap-on type screw down single spring compressor to do mine and it worked okay.......but, what kinda $$$ for the Crane tool?
brentonsav - so it was you who tripped over my kids the day you brought your car into Chev's? Very nice clean ride that. Enjoy and start saving for the cam!!!
Cheers,
Macca
Can't remember how much the Crane tool was Macca, but it halves the time taken than using the single valve spring compessor. Got it off SpeedPro Distributors in Noble Park. Give the retainer a hit with a soft hammer to loosen the collets. insert some compressed air, wind down the center nut to compress the spring, and with a pen magnet(the same ones to hold the lifters up)dislodge the collets. Fit he new 918's, refit retainers/collets and then back off center nut. Pull off Crane tool and give the retainer/spring another hit with the soft hammer to "settle" the spring. Done:thumbsup:
SiLENCE
27-01-2007, 03:33 PM
and for the chequebook racers or those of us with crap tools, how much would it cost for you to do the job for us gary?? :)
Dane VN V8
27-01-2007, 03:51 PM
tis my car.
one day the cam will happen but did it to get rid of the valve float i had from day one... also gotta do tex before cam...
the dyno chart with the two curves would also be good to show chev but my copy is at home and i dont have it scanned.
What do you mean by valve float?
Dane.
RARASV8
27-01-2007, 04:41 PM
:idea: yes please, price guide would be good.drive in:driving: drive out:driving:
Garry
Lunchbox
27-01-2007, 06:59 PM
:idea: yes please, price guide would be good.drive in:driving: drive out:driving:
Garry
I wouldn't mind knowing either:idea:
brentonsav
27-01-2007, 09:48 PM
chev really does do great work
after my service, he was more than happy to put my car on the dyno to see the gain i got when i put my extractors and hiflow cats on even tho i didnt get him to put them on.
i also want to see my loss of valve float which is clearly illistrated on the chart
it is great piece of mine especially if the car spends time around the usual ls1 valve float revs cammed or not. see below:
http://www.users.on.net/~bsavio/Dyno%2002.jpg
Sorry for the delay in replying guys as I have been up at Bendigo all weekend. The price for the 918's fitted is $550 including dyno before and after graphs. As you can see by the pics, the 918 are a taller spring with more seat pressure than the standard spring to eliminate valve "float"
slaveboy
29-01-2007, 08:26 AM
Just a question for u CHEV do u have to have the cylinder u are puting the compressed air in on TDC?
throttlehappy
30-01-2007, 03:37 PM
im counting down the hours till mine get done ;)
cant wait for the rip shift either, the standard shifter is driving me nuts!
bungrs
30-01-2007, 10:54 PM
Fairly easy job if you have all the right tools. But if you haven't, don't try this at home. It could end up in tears.
This is the reason why i am getting you to insatll them next service. Will be calling in the next few days to orgonise it. :thumbsup:
This is the reason why i am getting you to insatll them next service. Will be calling in the next few days to orgonise it. :thumbsup:
Have got them on the shelf big fella. Will be fitting them in the next couple of days. (looking forward to the weather cooling off). Also had to put in a new battery as she wouldn't start. Hope your missus is all good for the new arrival:thumbsup:
Fitted the 918 to bungrs vxss today and all is good. Congtrats to you and your missus on the arrival of your new daughter. From the staff at Chev's
bungrs
27-02-2007, 09:13 PM
Fitted the 918 to bungrs vxss today and all is good. Congtrats to you and your missus on the arrival of your new daughter. From the staff at Chev's
Yeah thanks, wife and baby come home tomorow. Baby is 10 pound, and 22 inches, fit and healthy. SS seamed to be pulling heaps harder through the top end (form what i could tell from the passenger seat, cant wait to get my licence back). I am a hell of alot happier.
macca33
27-02-2007, 09:19 PM
Good on 'ya Chev - your expertise knows no bounds.
AND, best wishes to you and the family bungrs! :thumbsup:
Cheers and congratulations,
Macca
VXCAL346
28-02-2007, 08:52 PM
does anyone know anyone in sydney that does drive in drive out spring changes. How much would it cost for supply and fit of the 918's.
oh and by the way, nice job there chev. Easy to understand and easy job to do with the right tools, but i just dont have the time to do it myself these days. Would rather just give someone the car and have them fit them.
Howdy. There are some grouse shops in Sydney that would be happy taking care of your needs. Check the sponsors on this site. Marrano's springs to mind;) Cheers Chev
DaveHAT
28-02-2007, 09:10 PM
does anyone know anyone in sydney that does drive in drive out spring changes. How much would it cost for supply and fit of the 918's.
oh and by the way, nice job there chev. Easy to understand and easy job to do with the right tools, but i just dont have the time to do it myself these days. Would rather just give someone the car and have them fit them.
:yup: www.marranos.com.au.
psini
17-04-2007, 09:42 PM
Nice work ther chev. i know its a pretty old thread but iv only just found it am i am currently in the process of getting organised to do this mod to my car.
Like someone else has already asked do you need to put the cylinder you are working on at TDC or does the compressed air do an adequate job of holding the valves? Also do you check the installed height of the springs and shim them accordingly to achieve the same seat pressures or do you just wack em in? Any info would be great.
SS Enforcer
15-05-2007, 11:21 AM
Hi good job there just a quickie did you use the stock retainers for the 918's ? or are titanium ones needed.
cheers
iamhappy46
18-05-2007, 09:06 PM
Yes, each cylinder needs to be at TDC for the valves to be closed before pressurising the cylinder to stop the valve from falling in! Of course, once the rockers are off, all the valves are closed and you can probably do them all without needing TDC on each cylinder.
Titanium retainers are a good idea but not necessary.
wagnman
19-05-2007, 01:26 AM
Isnt it fantastic how inovative the auto aftermarket is at using existing bolt holes etc to create new tools?
I like the way those spring compressors work! that really is using ones brain!:bow:
Jezza@HDTCQ
19-05-2007, 09:32 AM
Yes, each cylinder needs to be at TDC for the valves to be closed before pressurising the cylinder to stop the valve from falling in! Of course, once the rockers are off, all the valves are closed and you can probably do them all without needing TDC on each cylinder.
Titanium retainers are a good idea but not necessary.
Being at TDC though means if that snazzy compressor fails the valve arnt going to drop very far at all.
Nice pics Chev, i might be having a crack at this in the near future.
Jez
Crusty
20-05-2007, 10:06 PM
Being at TDC though means if that snazzy compressor fails the valve arnt going to drop very far at all.
Nice pics Chev, i might be having a crack at this in the near future.
Jez
When HRT8 came over and helped me do my springs we didn't bother with the air compressor method we just made sure it was at TDC so the valve couldn't fall far, he reckons it was easier than using an air compressor and having to take out the plugs all the time.
The idea with the compressed air is that it holds the valve up so it makes it easier to fit the new springs/retainers/locks. You don't have to do it all the time(unless you are changing springs alot). Its not a huge time drama. Very easy with the right tools. By also pulling the plugs, we can see how the engine has been running. A used plug tells a story
Jezza@HDTCQ
20-05-2007, 10:32 PM
When HRT8 came over and helped me do my springs we didn't bother with the air compressor method we just made sure it was at TDC so the valve couldn't fall far, he reckons it was easier than using an air compressor and having to take out the plugs all the time.
This is the method I will be going. Pull the plugs and put a straw in the plug hole to check your at the top.
Jez
EDIT: If I had the fitting id use both
Crusty
20-05-2007, 10:54 PM
This is the method I will be going. Pull the plugs and put a straw in the plug hole to check your at the top.
Jez
EDIT: If I had the fitting id use both
Once you've confirmed cyl 1 is TDC you just have to turn the crank 90 degrees each time, nice and easy :) Obviously you need to follow firing order for this to work.
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