S.I. brand valves
5 posters
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S.I. brand valves
Anybody have anything good or bad to say about them?
Thanks.
Al
Thanks.
Al
72mav- Posts : 1081
Join date : 2008-12-03
Age : 61
Location : central Michigan
Re: S.I. brand valves
I've used SI valves for years with fine results. Their raceflow and their Silver Line etc.
DaveMcLain- Posts : 399
Join date : 2009-09-15
Re: S.I. brand valves
Thanks Dave,
Since your here, could you give me a answer to my above question?
Reason being, Im signing out here at the library shortly.
Thanks.
Since your here, could you give me a answer to my above question?
Reason being, Im signing out here at the library shortly.
Thanks.
72mav- Posts : 1081
Join date : 2008-12-03
Age : 61
Location : central Michigan
Re: S.I. brand valves
DaveMcLain wrote:I've used SI valves for years with fine results. Their raceflow and their Silver Line etc.
Their "Competition Series" valve is right between those two and I have used them for years; still do...
Re: S.I. brand valves
I've used literally thousands of their valves in 385 Series stuff and zero issues thus far. Usually their PortFlow/QuickFlow line of stainless valves.
Paul
Paul
Re: S.I. brand valves
Stay away from the low end stuff if your going to run A big roller or big springs. They are ok for mild stock or street builds only IMO
dfree383- BBF CONTRIBUTOR
- Posts : 14832
Join date : 2009-07-09
Location : Home Wif Da Wife.....
Re: S.I. brand valves
That's just it - saying "S.I.Valves" is not distinguishing the quality level as they offer 4 different series of valves, (5 series if you count their Titanium valves also), and it is just like Manley or Ferrea or REV you can get anywhere from street replacement to full blown race valves.
Re: S.I. brand valves
I've used their Portflow series which is a budget swirl polished stainless valve for popular applications with no problems and I've run those with some rollers before in Big Ford and Chevy engines which is probably ok as long as the spring load, profile and rpm are all moderate. I've also used them a lot in circle track builds running flat tappets without failure. I had one engine that made very high EGT's and I would just change the exhaust valves when I would freshen the engine once a season.
DaveMcLain- Posts : 399
Join date : 2009-09-15
Re: S.I. brand valves
dfree383 wrote:Stay away from the low end stuff if your going to run A big roller or big springs. They are ok for mild stock or street builds only IMO
That is the plan Dave, Looking at the Comp Series right now. Waiting for my catalog.
Thanks.
Al
72mav- Posts : 1081
Join date : 2008-12-03
Age : 61
Location : central Michigan
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» 429 SCJ original ( used ) intake valves and NOS 2.19 PI valves - price lowered and shipping included!
» Titanium valves: 2.25 valves SOLD; 2.35 valves SOLD,2.40 valves SOLD
» WHAT BRAND LIFTERS ------
» the dove c heads i bought , i measured the intake valves they were 2.250 assuming these are not stock valves ?
» 429 SCJ original ( used ) intake valves and NOS 2.19 PI valves - price lowered and shipping included!
» Titanium valves: 2.25 valves SOLD; 2.35 valves SOLD,2.40 valves SOLD
» WHAT BRAND LIFTERS ------
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