need4z

iTrader: (5)

Just wondering on quality comparing these. With the Comp kit costing nearly twice the price. Where is the advantage here? The comp springs, the Ti retainers?? Or are the other 2 kits just a better value ,without sacrificing quality? opinions?? Just wondering what to assemble my bare TFS heads in. Thanks

Derek

need4z

iTrader: (5)

So what you are saying is that the 2 kits are identical part for part, and that the comp kit is just TWICE the price for no good reason?

Jessica

No they are not the same..... Matt needs to go get out a set of Calipers and measure each one of these springs and retainers. Some of the measurements are off .050" between the springs.

Don't lie to make your PRC parts look better than they are.... anyone who has disassembled a head running both of those springs would choose to NEVER run one of those spring setups again after pressure testing them and measuring them.

Jes

99_SS_LS1

iTrader: (4)

nebur8

iTrader: (6)

whoa!

WKMCD

iTrader: (2)

I have a set of 921's and a set of PRC spings in the garage. I just went out and measured them both.

Now the measurements tell the tale

1221 Spring

1.300" OuterOD
.895" Outer ID/Inner OD
.655" Inner ID

754 Retainer

1.235" OD
.860" 1st Step
.610" 2nd Step


PRC Spring

1.290" Outer OD
.945" Outer ID/Inner OD
.675" Inner ID

PRC Retainer

1.235" OD
.910" 1st Step
.660" 2nd Step

Those don't match up!!!!

SOMbitch

iTrader: (8)

Nice too see you on here again Jesse I always thought the problem was inconsistent retainer thickness as much as anything else.....Any way I learned my lesson and will be putting on PAC 1518's this summer...... **** I need to hurry and get a Crane tool before they close doors

Tata

need4z

iTrader: (5)

I guess you get what you pay for. I will save up and get the Comp 921 kit for $600 bux thanks.

Derek

KingSS

iTrader: (1)

you people are ****** rediculous

WKMCD

iTrader: (2)

Thanks for clearing up that they are NOT the same spring.

Jessica

Thank god PAC makes the real versions! (1221 & 1521) PSI has a nice little spring that's the same relative sizes and rate, you guys going to claim that's the same spring as well?

PAC > Associated

Jes

SOMbitch

iTrader: (8)

Unbelievable (almost) the prc thread disappeared. Just WOW. Jess you are prolly right..,,,This one might vanish too........

GTABurnout

iTrader: (1)

Why risk it when a spring could ruin an engine. Just run the nicer 921 kit...

SOMbitch

iTrader: (8)

Just run a PAC or PSI

Jessica

It is kinda odd how all of Matt's posts went up like a Fart in the wind!

If something did happen with them do you think the post would stay around long enough for anyone to notice? Talk to people who have actually torn down cylinder heads with those parts on them and you might get some different stories. It's not that they break.... it's all the other goofy ****.

Jes

DONAIMIAN

iTrader: (18)

Yes I do think it would stay around. As a mod, I'm able to see deleted and moved threads. I'm on here every day and I have never seen anything moved or deleted related to these springs.

studderin

iTrader: (28)

Matt just removed that? He said the PRC, and 921s are the same spring I'd hope somone would know the specs, on parts they sell?

need4z

iTrader: (5)

Sorry guys, maybe I shoulda posted which are the best all round dual "drop in" valve springs? I believe like I said before the TEA and PRC kits are the same spring right? Also same is the Patriot extreme golds too correct?? Just want to know what I should go with. I mean the Comp 921 kit is soo damn pricey. These will go on my TFS 215cc bare heads which my cam will be the VRX4. Has anybody bought the PRC or TEA spring kits ( springs,seats, ti retainers, seals,) ?? Any problems??? Do these springs die after one season of driving. I need to know HONEST answers sometime in the next few weeks please guys.

Derek

WKMCD

iTrader: (2)

You asked what the best spring is and then said the 921's are pricey. Unfortunately that's often the way it works. The best drop in dual spring out there is the PAC 1521's. More expensive than the 921's but they are great springs and nitrited for long life.

Jessica

Not to mention all the spring kits he is mentioning are the exact same thing...... just ran into a guy who had to replace his TFS spring kit due to the springs being down on seated pressure and some had sagged... doesn't matter who sells them they are all the same springs with the same issues. I think he took WKMCD's advice and went with the 1521's.

Must be..... Matt@Texas_Speed deleted his posts after it was proven he was lying... that's pretty shady. I don't care if the site did it, moderator or the big $$$ sponsor did it, it shouldn't happen or guys like him will keep making posts like that.

Jes