13thracer Posted July 6, 2006 Share Posted July 6, 2006 does anybody know of a workshop in brisbane that would be able to make my internal gate bigger and roughly how much it would cost Link to comment https://www.sau.com.au/forums/topic/125147-enlarging-internal-wastegate/ Share on other sites More sharing options...
DennisRB30 Posted July 6, 2006 Share Posted July 6, 2006 (edited) Is it just a standard turbo on a standard engine? Does anyone else habe this prob with the turbo on the same engine? Just thinking maybe your dump pipe might be causing some probs. I done work on my wastegate for my 2JZ because it is known to be much too small. http://www.supraforums.com.au/forum/showth...light=wastegate Edited July 6, 2006 by DennisRB30 Link to comment https://www.sau.com.au/forums/topic/125147-enlarging-internal-wastegate/#findComment-2311265 Share on other sites More sharing options...
paulr33 Posted July 7, 2006 Share Posted July 7, 2006 you wont gain anything by enlarging it what are you trying to achieve? Link to comment https://www.sau.com.au/forums/topic/125147-enlarging-internal-wastegate/#findComment-2312910 Share on other sites More sharing options...
R31 POWER Posted July 7, 2006 Share Posted July 7, 2006 Just take your turbo off and attack it with a die grinder Just dont grind the hole too big or it wont seal with the standard wategate flap! I will be doing this to my HKS GT2535 as 14psi is the least i can run with the standard RB20det actuator and no boost controller. Link to comment https://www.sau.com.au/forums/topic/125147-enlarging-internal-wastegate/#findComment-2313166 Share on other sites More sharing options...
DennisRB30 Posted July 7, 2006 Share Posted July 7, 2006 Just take your turbo off and attack it with a die grinder Just dont grind the hole too big or it wont seal with the standard wategate flap!I will be doing this to my HKS GT2535 as 14psi is the least i can run with the standard RB20det actuator and no boost controller. What do you want to run less than 14psi for? Link to comment https://www.sau.com.au/forums/topic/125147-enlarging-internal-wastegate/#findComment-2313465 Share on other sites More sharing options...
nF Posted July 7, 2006 Share Posted July 7, 2006 you wont gain anything by enlarging itwhat are you trying to achieve? to s4ti5fy hi5 l4dy fr1end better perhaps? Link to comment https://www.sau.com.au/forums/topic/125147-enlarging-internal-wastegate/#findComment-2313507 Share on other sites More sharing options...
13thracer Posted July 7, 2006 Author Share Posted July 7, 2006 im doing it because the standard one does not flow out enough gas so its creating overboosting issues at high revs have wire the wastegate right open and drove car it still overboosts, my engine is no longer standard hence the increase in exhaust flow and my problem Link to comment https://www.sau.com.au/forums/topic/125147-enlarging-internal-wastegate/#findComment-2313822 Share on other sites More sharing options...
Adriano Posted July 7, 2006 Share Posted July 7, 2006 I have done this on many highflowed turbos, and have had good results with gaining better boost control, open up the hole until there is about 1.5mm of metal for the flap to cantact, then blend the inside of the housing where the ehaust enters the turbo as much as possible without giong too thin in the wall, as this will make it more susceptible to cracking. I am a little concerned that it still overboosts with the gate wired open , as it really should hardly make any boost at all. Link to comment https://www.sau.com.au/forums/topic/125147-enlarging-internal-wastegate/#findComment-2313998 Share on other sites More sharing options...
jazza08 Posted July 8, 2006 Share Posted July 8, 2006 Dont be weak.. just go external gate Before you go machining holes out just check that the dump pipe doesnt restrict the wastegate flap from opening fully as thats an easy fix! Otherwise it will be related to the hole being too small and unable to vent the gas's at higher rpms due to more exhaust wheel flow. Link to comment https://www.sau.com.au/forums/topic/125147-enlarging-internal-wastegate/#findComment-2314065 Share on other sites More sharing options...
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