Exhaust system shopping
#21
Boost Pope
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Bell has the sexiest pipe by far, featuring a divorced wastegate tube. $385 for stainless, $285 for mild steel. http://www.bellengineering.net/Pages...ata_parts.html
My pipe was made by TurboTony, who hangs around this forum. It does not have a divorced wastegate return, but is somewhat less expensive and was considered the gold standard prior to the Bell unit. turbotony2k@yahoo.com
#22
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Didn't you get the BEGi pipe? Your DP + exhaust will flow better than mine, so you'll hit peak boost a few hundred rpm sooner. You'll want to have a new WG can waiting for you too.
#25
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Yes, get a better actuator, especially if you want to make power similar to mine. **** a helper spring. Do it right.
Brainy, if you saw my EBC duty cycle table you'd ****. 98% to redline
Brainy, if you saw my EBC duty cycle table you'd ****. 98% to redline
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#27
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your before/after mbc/ebc dyno runs where phenomenal... I know this hurting me. My LINK ebc chip is dead. Need to fix it.
on topic-
danimal, I had a flowmaster and when I swapped to what I though was more restrictive no-name turbo muffler, turbo spooled 300rpm earlier across the board. Somebody replied that chambered type mufflers kill turbo spool - they're designed for v8 exhaust pulses and the turbo has none.
on topic-
danimal, I had a flowmaster and when I swapped to what I though was more restrictive no-name turbo muffler, turbo spooled 300rpm earlier across the board. Somebody replied that chambered type mufflers kill turbo spool - they're designed for v8 exhaust pulses and the turbo has none.
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#30
Boost Pope
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http://www.atpturbo.com/Merchant2/me...egory_Code=WGT
http://www.atpturbo.com/Merchant2/me...egory_Code=WGT
Biggest problem for me would be that eliminating the need for the MBC would also eliminate my failsafe bypass on the WI system. Still, consistant boost would be nice. Clifford varies between 12 and 15 PSI seemingly at random...
#31
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would this work? (guessing you'd have to get their "adjustable rod end" also)
http://flyinmiata.com/index.php?dept...umber=02-70570
http://flyinmiata.com/index.php?dept...umber=02-70570
#35
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How "universal" an item is a WG actuator anyway?
The trick is to find one that is dimensionally compatible with the Greddy TD04H-15G setup in terms of:
1- Being able to fabricate a mounting bracket that will mate to the can
and
2- Ensuring that the rod can easily be made to mate with the WG arm on the turbine housing.
#36
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I'm looking to replace my wastegate can too.
They are universal in the sense that you can slap it on if you can screw it to the greddy bracket. They are not universal in the sense that your boost will be affected.
I shopped for one on Ebay awhile back based on appearance alone. Unfortunately, even though it looked identical in the picture, it was bigger and the base boost setting was just too high. I was thinking about picking up the one from Flyin Miata but I would like confirmation that it has the proper boost setting.
They are universal in the sense that you can slap it on if you can screw it to the greddy bracket. They are not universal in the sense that your boost will be affected.
I shopped for one on Ebay awhile back based on appearance alone. Unfortunately, even though it looked identical in the picture, it was bigger and the base boost setting was just too high. I was thinking about picking up the one from Flyin Miata but I would like confirmation that it has the proper boost setting.
#37
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True, and I believe that this answer's akaryrye's question as well, insomuch as why they are sold seperately.
Different WG cans will activate at different pressure levels depending upon the design of the spring and diaphragm. The one that comes on the Greddy yields around 5PSI. To increase this, you can either run a boost controller (which prevents the WG can from seeing the true pressure in the manifold) or by simply installing an WG can which is designed to operate at a higher level.
I expect that boost would tend to be more consistant running a higher-pressure WG can, though the oft-alluded-to benefit of delaying the opening of the WG door would be lost. This should in theory cause a slight decrease in the rate at which boost is achieved.
Different WG cans will activate at different pressure levels depending upon the design of the spring and diaphragm. The one that comes on the Greddy yields around 5PSI. To increase this, you can either run a boost controller (which prevents the WG can from seeing the true pressure in the manifold) or by simply installing an WG can which is designed to operate at a higher level.
I expect that boost would tend to be more consistant running a higher-pressure WG can, though the oft-alluded-to benefit of delaying the opening of the WG door would be lost. This should in theory cause a slight decrease in the rate at which boost is achieved.
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