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VRIS Solenoids in Turbo Application
Posted: February 14th, 2006, 9:21 pm
by Tommy D
One thing has been bugging me for a while...
I had probs with my VRIS solenoids when i did my swap bacause the vaccum source pipe on the belt side of the engine wasnt connected to the I/M and on the other side the vaccum chambers under I/M.
When engine is running there is a vaccum in the I/M because of air displacement on a piston induction stroke. This vaccum under accel or load is the vaccum source that operates the VRIS solenoids. However if you turbo your engine, there will no longer be a vaccum in the IM under boost, but instead the opposite. Therefore the solenoids wont open.
How do we keep the solenoids working? or do you jam them open in Turbo application? as im sure they do something internally?
Cheers
Posted: February 15th, 2006, 9:23 am
by XxantwawnxX
Ive did a lil reseach on this and ive found that the best option is th etie both vris sols open . now thats the directions i keep getting from people (i did get others like tie one open or whatever). although both seemed to produced better results.
Posted: February 15th, 2006, 2:51 pm
by Custommx3
A local Probe guy here when we did his turbo... removed the VRIS flaps because they caused restriction.
Posted: February 18th, 2006, 3:07 pm
by Mnemonic
Custommx3 wrote:A local Probe guy here when we did his turbo... removed the VRIS flaps because they caused restriction.
DynoLabs here in Georgia built a turbo kl03 motor and they did teh same thing removed the flaps and they also found a box that would plug into the vaf to eliminate that
Posted: February 18th, 2006, 6:14 pm
by babyblueMX3
same here I removed everything related to the vris and welded the holes shut!
Posted: February 18th, 2006, 7:20 pm
by XxantwawnxX
I hear you can use MSnS to control when the flaps open...so just have MSnS to overide the flaps and keep them open under boost(3000 or so rpm depending on alot of factors)
Posted: February 18th, 2006, 10:29 pm
by slimmyslim1420
Would there be a power difference between having the flaps permanently open and having them completely closed off?
Posted: February 19th, 2006, 12:59 am
by XxantwawnxX
Accorind to people if your valves are closed while you under go boost you will hamper pefomance.
Posted: February 19th, 2006, 4:11 pm
by max kl
if your vacume reservoirs do noy leak and the ckeck valve workes the virs will still work. there is very little vacume in the im at wot with a na motor the check valve keeps vacume in the reservoirs to maintain virs opperation
on a stock set up.
Posted: February 19th, 2006, 8:39 pm
by slimmyslim1420
babyblueMX3 wrote:same here I removed everything related to the vris and welded the holes shut!
Would this be considered open or closed?
Posted: February 19th, 2006, 9:44 pm
by XxantwawnxX
Open..he took the valves out.
Posted: July 29th, 2007, 3:40 pm
by PWRD_BY_HKS
What about that little hose that runs under the manifold. Also v ris related what do you do with that one. Or will it be all good as long as the silenoids stay open.
Posted: August 1st, 2007, 7:01 pm
by blackops032
it will be fine as long as the solenoids stay open. or just remove them