tial BOV any good?
#5
NorCal 7's Co-founder
The Tial is a GREAT BOV!! Just make sure that you get the "rotary friendly" spring from Tial. The standard spring is too hard for the boost levels that we run and you'll experience compressor surge if you aren't at WOT. One of the best built BOV's I've ever seen too. I love mine and would never switch to anything else.
Zach
Zach
#6
Shut Down The System
Join Date: Mar 2005
Location: Miami
Posts: 783
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by BoostedRex
The Tial is a GREAT BOV!! Just make sure that you get the "rotary friendly" spring from Tial. The standard spring is too hard for the boost levels that we run and you'll experience compressor surge if you aren't at WOT. One of the best built BOV's I've ever seen too. I love mine and would never switch to anything else.
Zach
Zach
Trending Topics
#10
ridin' dirty
Join Date: Jan 2004
Location: Lincoln, CA
Posts: 464
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by BoostedRex
The Tial is a GREAT BOV!! Just make sure that you get the "rotary friendly" spring from Tial. The standard spring is too hard for the boost levels that we run and you'll experience compressor surge if you aren't at WOT. One of the best built BOV's I've ever seen too. I love mine and would never switch to anything else.
Zach
Zach
I bought my husband one and obviously he loves it
#14
583 rwhp 1st gen
iTrader: (1)
Join Date: Jul 2004
Location: texas
Posts: 397
Likes: 0
Received 0 Likes
on
0 Posts
mine is great the only thing that i had to get a spring that opens in the right time but had to shim it to get it to close on idle, the springs that the shop offered where either too hard or soft so i went with the soft one and shimmed it a little.
great piece though
great piece though
#16
Dirty
iTrader: (4)
The spring rating is not actually for the pressure, but for the vacuum at which it opens, so it has nothing to do with the amount of boost your running.
They sound great IMHO.
1sgen, I noticed that mine is also open at idle, but I didn't really think anything of it. I don't think it hurts to have the engine breathe a little through the BOV at idle, does it?
They sound great IMHO.
1sgen, I noticed that mine is also open at idle, but I didn't really think anything of it. I don't think it hurts to have the engine breathe a little through the BOV at idle, does it?
#17
Out of the game
iTrader: (1)
Join Date: Dec 2004
Location: Reno NV
Posts: 637
Likes: 0
Received 0 Likes
on
0 Posts
When compared to something like the HKS ssqv they're both completely different. The Tial for example depends on the spring pressure to keep it the valve sealed under boost. I was told this is common for this particular bov to lose a small amount of boost due to this set-up.
The HKS uses the boost to help keep it's valve closed.
I like the looks and the sound of the tial better and would use it over the HKS unless I was running high boost or racing.
The HKS uses the boost to help keep it's valve closed.
I like the looks and the sound of the tial better and would use it over the HKS unless I was running high boost or racing.
#18
583 rwhp 1st gen
iTrader: (1)
Join Date: Jul 2004
Location: texas
Posts: 397
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by allenhah
1sgen, I noticed that mine is also open at idle, but I didn't really think anything of it. I don't think it hurts to have the engine breathe a little through the BOV at idle, does it?
#20
boxed in and drawn out
Join Date: Dec 2003
Location: Bayouself
Posts: 555
Likes: 0
Received 0 Likes
on
0 Posts
same stuff I posted earlier...I guess its OK. I hope it does not assist in idle surge. It reacts very well and easliy.
https://www.rx7club.com/single-turbo-rx-7s-23/tial-bov-search-doesnt-show-same-symptom-476873/
https://www.rx7club.com/single-turbo-rx-7s-23/tial-bov-search-doesnt-show-same-symptom-476873/
#24
All BOVs (that I know of) use the boost pressure to stay shut under boost, since the pressure in the hose serves to cancel out the pressure in the IC pipe. Still, they can open under boost when the pressure drop between where the BOV is installed and where the hose connects to the manifold is large and overcomes the BOV spring. They are designed to open when the throttle closes, giving vacuum to the hose (since closing the throttle makes a vacuum in the manifold, even under boost) and pressure from the IC pipe side. They can open at idle, too, when the vacuum between the engine and the throttle overcomes the BOV spring. At idle, there isn't much happening (pressure or vacuum) on the IC pipe side. I am sure there are some minor design variations, but that's how BOVs work.
-Max
-Max
#25
boxed in and drawn out
Join Date: Dec 2003
Location: Bayouself
Posts: 555
Likes: 0
Received 0 Likes
on
0 Posts
heyI am having idle issues with the new motor.I was wondering how much of the soft spring contributes to the surging. i have removed the ISC (Chuck fixed thePFC),checked for vac leaks, adjust air bleed in conjustion with idle screw and nothing helps it except for when it gets atround 1800, 2000.
Would this BOV close under 1000 rpm and then allow smoother idle?Just wondering since apparently others have a floating Tial BOV at idle.
Would this BOV close under 1000 rpm and then allow smoother idle?Just wondering since apparently others have a floating Tial BOV at idle.