boost control
07-12-2006, 09:47 AM
#1
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help with boost control
on the dyno i have no control of the boost, i'm using a tial 44mm wastegate with a 8psi spring,ramhorn manifold, h22a with 9.1 pistons, eagle rods, sleeves, arp studs etc. at about 4600rpm the turbo takes off to about 18psi, the turbo is a precision 5252e, full 3inch exhaust, what can be causing this, i'm thinking of adding another wastegate, what do u guys think???
Modified by high boosted rex at 11:15 AM 7/12/2006
Modified by high boosted rex at 11:15 AM 7/12/2006
07-12-2006, 12:58 PM
#4
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Re: help with boost control (high boosted rex)
why do you have an 8PSi spring in the WG? maybe its too small and causing that problem. Ive been there and done that just with a much bigger turbo. i couldnt keep it below 14-15 psion a 10psi spring
07-13-2006, 07:06 AM
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Re: (Topdawgg)
yup, the vac line is on the lower nipple, thats the right place for it, the vac line is good, on the run the wastegate isn't opening at all, there is nothing coming out of it, its like its closed shut. someone suggested adding another wastegate???
07-13-2006, 08:08 AM
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Re: help with boost control (high boosted rex)
here are some pics of the setup
someone suggested that the flow is to great and can't make the 90degree bend to the wastegate cause the airflow to bypass wastegate.. What do u think??
someone suggested that the flow is to great and can't make the 90degree bend to the wastegate cause the airflow to bypass wastegate.. What do u think??
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07-13-2006, 08:33 AM
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the wastegate HAS to be stuck closed.check all vacume lines and pull the wastegate to see if you can puch the plunger in with your thumb to make sure there is nothing physically interfering with it.
07-13-2006, 06:24 PM
#11
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Re: (qfast817)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by qfast817 »</TD></TR><TR><TD CLASS="quote">the wg line looks to long, try hooking the bc closer to the wg</TD></TR></TABLE>
where do you see a wg line ?????????????????????????????????????????????
where do you see a wg line ?????????????????????????????????????????????
07-13-2006, 06:29 PM
#12
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Re: (dturbocivic)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by dturbocivic »</TD></TR><TR><TD CLASS="quote">
where do you see a wg line ?</TD></TR></TABLE>
yeah really.
where do you see a wg line ?</TD></TR></TABLE>
yeah really.
07-14-2006, 07:10 PM
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Re: (qfast817)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by qfast817 »</TD></TR><TR><TD CLASS="quote">the wg line looks to long, try hooking the bc closer to the wg</TD></TR></TABLE>
LOL I think thats the oil line you are talking about.
LOL I think thats the oil line you are talking about.
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