Time for head
Rod Bearing Eater
Join Date: Apr 2002
Posts: 27
Likes: 0
Received 0 Likes
on
0 Posts
Even though that question is not directed towards me, I am confused. Wastegate controls the speed of the turbo by allowing gas to bypass the exhaust turbine. The BOV is too help prolong the life of the compressor by letting out excess boost when the TB closes? You need to have a wastegate but a BOV is optional. You cannot substitute a BOV for a wastegate to control boost, thats what I understood, and the use of both is conventional.
__________________
Patrick
05 SRT-4: Daily Driver, 11.9@117.4
88 Aries: 2.2L Turbo (Powered by Megasquirt II)
Patrick
05 SRT-4: Daily Driver, 11.9@117.4
88 Aries: 2.2L Turbo (Powered by Megasquirt II)
Rod Bearing Eater
Join Date: Apr 2002
Posts: 27
Likes: 0
Received 0 Likes
on
0 Posts
Originally posted by "leadfootedfool"
Blow off valve is a wastegate.
Blow off valve is a wastegate.
Does not compute Will RobinsonYeah sort of but I was under the impression that wastegate is a term reserved for a device on the exhuast side?
Would there be any reason not to use both?
__________________
Patrick
05 SRT-4: Daily Driver, 11.9@117.4
88 Aries: 2.2L Turbo (Powered by Megasquirt II)
Patrick
05 SRT-4: Daily Driver, 11.9@117.4
88 Aries: 2.2L Turbo (Powered by Megasquirt II)
Guest
Posts: n/a
LOL, i'm confused now too. The wastegate is like a trap door in the turbine housing (exhaust side) that opens and allows exhaust gas to bypass the turbine wheel, regulating the amount of boost the compressor side makes. A BOV is a valve that is between the turbo and the throttle body that when the TB slams shut (between shifts usually) yet the turbo is still cranking out boost. Instead of a big pressure spike bouncing off the TB and hitting the turbo... not good for the turbo, and slows it down big time which makes it have to spool back up for the next gear.... this valve opens and bleeds off the pressure. True, you do not NEED a BOV.. and ive never heard of anyone controlling boost with a BOV. It would have to flow TONS of air, and meanwhile the turbo would be spinning like mad and be way out of map.
So in reply to the question... i have both a wastegate and bov. Both are hooked up to seperate vacuum lines into seperate barbs on my vacuum manifold. Its not as critical to have them isolated from each other. You definatly want to keep the FPR(s) and MAP with their own line though.
So in reply to the question... i have both a wastegate and bov. Both are hooked up to seperate vacuum lines into seperate barbs on my vacuum manifold. Its not as critical to have them isolated from each other. You definatly want to keep the FPR(s) and MAP with their own line though.
Guest
Posts: n/a
ported head & ported 2-pc intake & ported Peters exh manifold installed - check
0.20" head spacer installed - check
52mm tb - check
cam installed - check
adj cam gear - check
timing belt back on - check
dist back in - check
vacuum lines hooked up - check
3/8" fuel return installed and hooked up - check
exhaust hooked up - check
oil changed - check
Still on the list:
Need two more 3" mack daddy IC pipe hose clamps
need to make my new intake piping hook up to the filter
put together a valve cover breather system
start engine
0.20" head spacer installed - check
52mm tb - check
cam installed - check
adj cam gear - check
timing belt back on - check
dist back in - check
vacuum lines hooked up - check
3/8" fuel return installed and hooked up - check
exhaust hooked up - check
oil changed - check
Still on the list:
Need two more 3" mack daddy IC pipe hose clamps
need to make my new intake piping hook up to the filter
put together a valve cover breather system
start engine
need to go for a test drive.
