I have put over 1000 miles on them with no problems, any one else? <img border="0" alt="[Camaro]" title="" src="graemlins/camaro.gif" />

 

there was a bad batch released earlier this year but that has been resolved. You should be good <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />

 

I have just turned 5K hard miles on my heads/cam (.567) mid 11 second C5 with no problems. <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />

MTI 427 Roadster (Big cubes going in around the first of the year at MTI) <img border="0" title="" alt="[Eek!]" src="gr_eek2.gif" />

 

I have seen my fair share of broken ones.

 

I have about 1000 miles on mine and no problems yet. I did my own cam install and I was positive something was gonna break, i figured I didnt tighten something down, but so far so good. (Knock on wood)

Morgan.

 

Have about 4000 on mine, no problems so far. B1 cam,

Steve

 

It depends on who sets them up and checks the bind and heights and you wont have any problems.

 

I have 4K miles on my 918's and so far so good. They are the new style with the blue stripe.

 

I have over 10,000 miles and many 6500rpm shifts with no trouble at all.

<small>[ November 10, 2002, 06:22 PM: Message edited by: LS1derfull ]</small>

 

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">It depends on who sets them up and checks the bind and heights and you wont have any problems. </font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Please tell us who on here does that? Also please tell us why we should check that on stock heads and valves with springs that are supposed work specifically for that application?

<small>[ November 10, 2002, 08:15 PM: Message edited by: Smoke_ur_5.0 ]</small>

 

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Smoke_ur_5.0:
<strong> </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">It depends on who sets them up and checks the bind and heights and you wont have any problems. </font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Please tell us who on here does that? Also please tell us why we should check that on stock heads and valves with springs that are supposed work specifically for that application?</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Why do you use plasti-guage for bearings? The crank is turned for that specific bearing (IE .10)

I do know one that does it, but they will remain out of this unless wanted to be brought up <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />

 

I agree with smokeur50 on having to cheeck them because they are stock replacements,

2nd part of this topic is, How many miles will these springs last? 10K to 20K

 

I had mine installed in mid-June when a Rev 1115 broke on me. I currently have almost 7K miles on them. Nothing special was done to them during install since I was 1000mi away from home and the dealership was the closest place to have them installed.

No drag strip use, one mini-prix, and some spirited street driving since the install, though. Since I've broken springs every summer, I am getting paranoid about all these POS aftermarket springs.

 

Iwouldnt trust them. I was a Rapid Motorsports and saw a box of pistons and there was only 7. The 8th one was in a million pieces in the motor.The owner had to get a whole new block. New batch or old batch I wouldnt put them on my car if you paid me.

 

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by 98_1LE:
<strong>I have 4K miles on my 918's and so far so good. They are the new style with the blue stripe.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Mine have a yellow stripe on them. Should I be concerned?

 

Don't even get me started on this one! The last time I voiced my opinion on this subject, the entire post disappeared. Let's just say "Not with a ten foot pole".

Isky
Manley

Good luck

 

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Smoke_ur_5.0:
<strong> </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">It depends on who sets them up and checks the bind and heights and you wont have any problems. </font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Please tell us who on here does that? Also please tell us why we should check that on stock heads and valves with springs that are supposed work specifically for that application?</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Well on a stock head I wouldn't worry about it. But I always check installed height and spring pressures just to be on the safe side. With a head thats had work done to it, its only smart to do it. You just never know how deep someone cut the valve job or how much the seats are off when they installed them. Any good install shop would be smart enough to check that just to be on the save side. <img border="0" title="" alt="[Razz]" src="gr_tounge.gif" />

<small>[ November 11, 2002, 05:43 AM: Message edited by: TA2SLOW346 ]</small>

 

I have had two break on springs I have installed and had another one come in from a reputable shop that installed them. I do agree on a head that has any type of port work or machining done you should check it but, all of these 918's I have seen break were on stock heads and I am quite sure would have checked out OK on installed height and bind.

 

If not the 918's is there a beter stock replacement spring without machine work?

What is suggested installed height on a stock ls1?

thanks
Sean

 

I know recently a better option for stock replacement came out involving a dual spring without any machining which is suppose to be better than the 918s.

I believe they are the dual rev springs but don't quite recall. Someone here i am sure will confirm whether they are in fact the dual rev springs. I would go with this dual spring for better safety of not dropping a valve and overall piece of mind! <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />

Best of luck.

MTI 427 C5 Roadster