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08-03-2011, 07:11 AM | #487 |
Drives: Vitz RS Turbo Join Date: Nov 2008
Location: ML
Posts: 576
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Thanks for the help guys but I really care about this motor and I prefer being safe than having a wrecked motor for just a few more rpm.
I am thinking of let it run from 6500rpm till 7000rpm and see if it will keep making power and torque on the stock head. I am thinking of boosting till 16psi for now and see how it goes after trying it on the drag strip. The main issue in this country is fuel octane since you don't get constant octane from the station. I will be using the Lucas octane booster to tune and keep giving her every refuelling to be safe. The other issue is tire traction and wheel spin from a stop. The tires are Toyo R888 rally semi-slick tires but still having wheelspin above certain rpm launches. I am trying to set a launch control switch to help with this issue. |
08-29-2011, 12:35 PM | #488 |
Drives: Vitz RS Turbo Join Date: Nov 2008
Location: ML
Posts: 576
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Today was the dyno day and we succesfully managed to get 210WHP @ 6800rpm and 184 torque at 5000rpm on the wheels with only 10psi of boost. We had some trouble with the AEM tru boost controller which wasn't increasing boost as it should be. I am sure that with 14 psi we could have managed 250WHP with stock cams / head internals.
The car was tried on street and got wheel spin issues till 3rd-4th gear. Now I need some serious rubber and I am thinking of a an AVON/Mickey Thompson slicks. I don't know if the drive shafts will hold the load on the drag strip so any feedback from boosted yaris owners with slicks are likely appreciated! Also what rim + tire size should I use to combine it with the C160 6spd 4.5:1 transmission? http://www.youtube.com/watch?v=9jCzU3sU53w |
08-29-2011, 12:54 PM | #489 |
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Drives: 07 Yaris Turbo Join Date: May 2007
Location: Canoga Park, CA
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First of all CONGRATS on reaching this landmark! I know the project has been a challenge but your persistence is paying off!
You should be able to burnout and launch in 2nd gear for best drag results. Does your management allow you to program a 2-step? I'll go check what wheels/tires I am running for drag racing, I think they work really well.
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08-29-2011, 12:54 PM | #490 | |
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Drives: 07 Yaris Turbo Join Date: May 2007
Location: Canoga Park, CA
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Quote:
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08-29-2011, 01:37 PM | #491 | |
Drives: Vitz RS Turbo Join Date: Nov 2008
Location: ML
Posts: 576
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Quote:
Yes the ecu is capable of a 2 step launch control and there is actually a switch installed on the handbrake to enable it when I want to. This was never tried since it was installed recently so I am not sure which are the correct ignition retard timing and enrichment settings for a good launch on the strip. I would probably try your advice of 2nd gear and begin with launch control from 5000rpm -20 Degrees ignition till I get it right. Next friday I booked for a Japs nightout drag strip so I am trying to get an average quarter mile time. |
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08-29-2011, 02:01 PM | #492 |
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Drives: 07 Yaris Turbo Join Date: May 2007
Location: Canoga Park, CA
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my two-step is programmed to flood the exhaust mani and build boost for launch at 16 psi. I don't think we changed the timing just for that.
I launch at 5500, but 5000 will probably be fine too. The slicks change things a LOT, you can launch much harder. I'm still getting used to that.
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Micro Image forums, online store and shop are now closed. It was a great eight year run, but it was time to focus on other things. I'm still selling parts on eBay under micro*image seller ID and customers can still make requests for anything specific. |
08-29-2011, 02:41 PM | #493 |
Drives: Vitz RS Turbo Join Date: Nov 2008
Location: ML
Posts: 576
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The curve inreases gradually until reaching 6800rpm. Above that range there wasn't any gain on power just a constant peak 211BHp till 7000rpm.
I should be able to get a curve printout for your reference. What slicks brand are you using and rim size/profile/wide measurement? |
09-26-2011, 02:43 PM | #494 |
Drives: Vitz RS Turbo Join Date: Nov 2008
Location: ML
Posts: 576
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I came across a friend which have a new race gate (external wastegate) for sale on a bargain price. He intended to put it into his own but scrapped the idea.
The race gate is 38mm and with an unknown spring pressure = unknown lowest boost pressure, BUT that is not a problem right now. The problem is LIMITED SPACE to put it in mate to exhaust manifold and downpipe which is really a complicated thing to do.... This gate would cost me the price of its own + fabricating custom work + hassle of bumping into other fuel / oil / water / cable components so after all this I ask >>> 1 . IS IT WORTH THE HASSLE OF DOING THIS? 2. WHAT ARE THE ADVANTAGES AND DISADVANTAGES OF THIS GATE VS INTERNAL? 3. WOULD THE ENGINE BE AT ANY RISK OF BOOST SPIKES BY KEEPING THE INTERNAL WASTEGATE? CHEERS |
09-26-2011, 02:48 PM | #495 |
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Drives: 07 Yaris Turbo Join Date: May 2007
Location: Canoga Park, CA
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Not sure it's worth it. Nice to be able to change out the spring (or the whole thing) when needed for the boost you are going to run. But if you're using a boost controller, you should be somewhat protected from surges and spikes either way.
I think that at your current position with the project, it's not a top priority to re-do a bunch of stuff.
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Micro Image forums, online store and shop are now closed. It was a great eight year run, but it was time to focus on other things. I'm still selling parts on eBay under micro*image seller ID and customers can still make requests for anything specific. |
09-26-2011, 04:38 PM | #496 |
Drives: 2010 black yaris Join Date: Oct 2010
Location: savannah, ga
Posts: 2,868
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as the saying goes, "dont fix what already works"..
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-Derrick- "Racing is important to men who do it well. When you're racing... It's life. Anything that happens before or after, is just waiting." |
11-28-2011, 11:40 AM | #497 |
Drives: Yaris ts 1.5 Join Date: Sep 2009
Location: Athens
Posts: 29
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From what i know:
advantages of external 1)better boost control 2)less backpressure 3)lower EGTS advantages of internal only cheap I ordered an emusa external for my tsport turbo as well |
11-30-2011, 11:56 AM | #498 | |
Drives: Vitz RS Turbo Join Date: Nov 2008
Location: ML
Posts: 576
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Quote:
My only issues in regards with the external wastegate is : 1. limited space to fit it on my custom manifold 2. A hassle of more hot pipes under the hood ! |
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11-30-2011, 01:14 PM | #499 |
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Drives: 07 Yaris Turbo Join Date: May 2007
Location: Canoga Park, CA
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sooooo.... is your wheel hop eliminated yet?
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Micro Image forums, online store and shop are now closed. It was a great eight year run, but it was time to focus on other things. I'm still selling parts on eBay under micro*image seller ID and customers can still make requests for anything specific. |
11-30-2011, 03:33 PM | #500 |
Drives: Vitz RS Turbo Join Date: Nov 2008
Location: ML
Posts: 576
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No Sir, I didn't have time to work on it since I am solving some other issues regarding high idle. It seems that the 2ZZ throttle body I bought this year has actually more air breathing than expected because of some wear and tear on the butterfly.
I am waiting for another and hope it is good this time ! I never knew I would have all these issues! |
11-30-2011, 03:43 PM | #501 |
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Drives: 07 Yaris Turbo Join Date: May 2007
Location: Canoga Park, CA
Posts: 14,859
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It never stops. I just did this to my clutch:
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Micro Image forums, online store and shop are now closed. It was a great eight year run, but it was time to focus on other things. I'm still selling parts on eBay under micro*image seller ID and customers can still make requests for anything specific. |
11-30-2011, 08:57 PM | #502 |
Drives: Scion xA Join Date: Oct 2009
Location: Virginia
Posts: 449
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wow, I have never seen a pressure plate break in half! Looks like a 6 puck? Thought you had exedy stage 2?
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12-01-2011, 12:21 AM | #503 |
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Drives: 07 Yaris Turbo Join Date: May 2007
Location: Canoga Park, CA
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I had Exedy Stage 1 a long time ago. The picture is a Clutchmasters Stage 4!
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Micro Image forums, online store and shop are now closed. It was a great eight year run, but it was time to focus on other things. I'm still selling parts on eBay under micro*image seller ID and customers can still make requests for anything specific. |
12-01-2011, 08:52 AM | #504 | |
Drives: Vitz RS Turbo Join Date: Nov 2008
Location: ML
Posts: 576
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Quote:
I tought clutchmasters are good though! Its time for a new better one ! Will the below fit the yaris :) |
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