LIMITS of a 40mm Tial wastegate?
 

I've been tryin to find out their limits on a 2 liter with a HP rating before it starts to get massive creep. But I cant find ---- with relativity to what I have. Spiker I'm sure you will chime in, or JD or one of the other TUNARZ will. Blundar said a number last tune session but he is on vacation I think and I'm not wanting to ask to find out. SO ANYONE have a great and intelligent info like flow rating/hp/torque to back up the info? I'm not wanting to find out the limits on the dyno and wnating to get ---- together before hand.
And Eville140 I may be shipping my mani back to you depending on the answers for upgrading the tubing of the WG and DP

Re: LIMITS of a 40mm Tial wastegate?
 

Their rated for 600whp but with a blue dash their only good for 200whp

Re: LIMITS of a 40mm Tial wastegate?
 

yeah but i think you forgot that the wide body kit allows for an extra 75hp so i would go with 275

Re: LIMITS of a 40mm Tial wastegate?
 

psi limits a wastegate more than horsepower does

Re: LIMITS of a 40mm Tial wastegate?
 

dx and tx


------- OUCH MAN





------- OUCH lol


And thanks complex, any ideas on psi/cfm limits?

Re: LIMITS of a 40mm Tial wastegate?
 

dunno, but designing your manifold efficiently to use the wastegate (not like cdm cast on #1 runner) would add a few hp to the limit for sure

Re: LIMITS of a 40mm Tial wastegate?
 

He doesn't have a CDM setup anymore. Check the pics he's posted on his car. Baller Eville manifold that flows awesome but from my ready I would suggest a bigger wastegate or duels and attention to the valve cover/crank case pressure setup you have. It scares me more than clowns...... :'(

Re: LIMITS of a 40mm Tial wastegate?
 

I think those old Tial 40's are pretty much 38's or they have 38mm outlets. Id say as long as ur not wanting to run low boost the 40mm WG will be fine.

how is their a PSI limit on the wastegate? U can always just run a stiffer spring if it cant hold the pressure.

Re: LIMITS of a 40mm Tial wastegate?
 

He has the Synapse ----.

WHatdepicts the needed WG is how much air has to flow past the turbine...lHOW MUCH it can flow past the wheel to maintain consistant boost levels without creeping... The more boost you run, the less air needs to bypass, so you wont need as much wastegate.l Too small, and it cant keep up, so it creeps.. He has a .63 housing too, thats on the small side. It will spool sick nasty, but well see if the Synapse is enough. Id go with a Tial 44, but I told him that from day 1.

Hell probably be fine with the 40mm

BUT ID do at LEAST 2 -10s off the back of the VC for Crankase evac... I have those and a -8 on the pan too an Endyn can. Not 1 issue.

Re: LIMITS of a 40mm Tial wastegate?
 

Odd the thread title says "LIMITS of a 40mm Tial wastegate?" :1

Re: LIMITS of a 40mm Tial wastegate?
 

Huh, I though he had that synapse piece of ----.... We all know the way he types...

LOL

Re: LIMITS of a 40mm Tial wastegate?
 

It has as much to do with the wastegate placement and manifold design as it does anything else.

Re: LIMITS of a 40mm Tial wastegate?
 

I pushed my tial 40mm into the 30 psi range and made I'm guessing 450-475 with the hx40 on my talon. Never once failed and is still going strong in a buddies car 3 years later.

Re: LIMITS of a 40mm Tial wastegate?
 

Small gates typically have a tough time regulating a small amount of boost, with a large turbo. Hence boost creep. High psi is not nearly as bad as most of the energy is being used to drive the turbo. (an Example 76mm turbo, at 10psi)

Too large of a gate and you have a tough time regulating the boost, ie boost flutter.

Fwiw, I would run the smallest gate that allows me to run with out creep, this has a lot to do with manifold design though, so on a log or a full hype, you might need a lot of gate to control the boost, where as a passenger or love fab mani, you might not. All with the same turbo setup.

Re: LIMITS of a 40mm Tial wastegate?
 

Reading owns your tubby butt. LOL
No I sold that to a friend with a DSM and he isnt having any kind of issues like I was having with trying to get a base psi and hold it with out drop or the opposite creep. He's running 17psi constant. ------- sucks, but do figure its a DSM. I have a Ching Chond with Tial internals, I know because I bought their rebuild kit.
But ------- back to the subject.
So with my goal of 550whp, with this precision 6262E, With a Eville140 mani, with 3in full exhaust, with 1000cc precision injectors, WILL I OR IS IT POSSIBLE THAT I"LL MAX OUT ITS FLOWABILITY. I dont want to go out and spend the cash just yet for a 44+yet. Times are bearing down hard now on Toyota. They just announced another 11 days of shutdown. That means in the first month of Janurary I've burned up all my vacation for the whole year. Not looking good.

Re: LIMITS of a 40mm Tial wastegate?
 

If the WG placement is cool, you should be fine

Re: LIMITS of a 40mm Tial wastegate?
 

I think I'm ok or RAndy would not allowed it
Attachment 11074
And the Dump
Attachment 11075

Got the ---- bolted up today
Had to take some material off the 6th bolt on the compressor housing, bolt is still functional, just needed some extra clearance so mani will bolt to head tightly.
Looks tits though, going to have to do some fuel adjustments for sure to beable to drive her around after the snow clears. DMC1 you game to just play with fuel? Same scenerio at before, gas and a meal paid? ---- I even have some parts that I KNOW YOU WANT for your twin cam. A little bribe! lol

Attachment 11076

Re: LIMITS of a 40mm Tial wastegate?
 

How about a pic, of where the wg tube connects to the manifold. :1

Re: LIMITS of a 40mm Tial wastegate?
 

The wastegate tube loops around from the collector so that it doesn't actually run off a runner. Good placement IMO and should work out just fine.

Re: LIMITS of a 40mm Tial wastegate?
 

Ask and you shall recieve
Attachment 11063
Attachment 11064
Now from there the bottom of the WG shoots towards the ground and if your the one looking in the engine bay this is what you will see, NOTE THE EXHAUST HOUSING
Attachment 11065
It's a tight ------- fit.

Re: LIMITS of a 40mm Tial wastegate?
 

you still fail to post where the wg runner meets the manifold

Re: LIMITS of a 40mm Tial wastegate?
 

Your not allowed an opinion until your car sees positive pressure








LOL

Re: LIMITS of a 40mm Tial wastegate?
 

are u blind ??? U can see it comes off the collector on the right side :S

Re: LIMITS of a 40mm Tial wastegate?
 

I'm kinda blind I can see where it looks like it goes into or possibly slightly behind cyl #2 runner.

IMO, the manifold looks like a decent design, but the wg looks like an after thought, from the pics I can see, it almost looks like the exhaust flow has to reverse to exit to the wg, as well it looks to only draw from cyl #2, that might just be the pic, but at most it is drawing from cyl #1 & cyl #2. This with angle of the wg tube with respect to the flow of the manifold, does not lend its self to an efficient extraction of excess energy.

With that being said, no one will be able to say for certain on your setup, if that wg will be enough or not enough, there are just too many variables. So run it, if it creeps, go bigger, if not run it. :1

Re: LIMITS of a 40mm Tial wastegate?
 

Some of you ------s are really ------- blind. SRSLY homos look, here is another angle so you can see that it's coming from the collector and at a down graded angle so no ------- backwash like Simplexes momma does when I force a load down her throat and it backflows out her nostrels and eye ducts.
Attachment 11057

And a better clearer picture so you see the WG and the outlet port heading to the ground.
Attachment 11058

Re: LIMITS of a 40mm Tial wastegate?
 

MUCH better pics.

Shouldn't be any worse then a typical ramhorn, not that they are great. The wg tube is better, then the other pics had led on. I think you will be on the edge of the capabilities at low boost, like around 7psi, but shouldn't creep much if you have the boost above that.

Re: LIMITS of a 40mm Tial wastegate?
 

Yeah the hondata EBC/mac valve "whatever you go by" has a base dudty cycle set for 11psi and goes up to 19psi per respective gear. But I'm going to disconnect the boost by gear and just go by one set psi dutycycle and add more fuel because I know this turbo is going to lean out my mix being that it flow 30% more cfm from what I've researched. DMC1 holla at this cracker, may need your help for a bit of street tuning in mid spring.

Re: LIMITS of a 40mm Tial wastegate?
 

Homodatas S300 boost control is spotty, inconsistant and a failure... to be nice.

Re: LIMITS of a 40mm Tial wastegate?
 

UZE KNOZE I'm Steeping to to ECTUNZ soon