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Fast Intentions Stage 2 TT build by MA-Motorsports.

Originally Posted by tonyHTX Always good to have a little more headroom! Now you're are talking about my concern with the 2.0 turbo's. I will post my thoughts on this

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Old 12-18-2018, 11:49 AM   #451 (permalink)
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Originally Posted by tonyHTX View Post
Always good to have a little more headroom!
Now you're are talking about my concern with the 2.0 turbo's. I will post my thoughts on this tonight.
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Old 12-18-2018, 11:51 AM   #452 (permalink)
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Good news, New turbo's are shipped to Fast Intentions. They just need to check them, clock the housing and will be shipping out. They need some FI luv and rubbing before sending out.
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Old 12-18-2018, 12:18 PM   #453 (permalink)
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Interesting discussion in regards to the cams, can't wait to see your results.

It's got me thinking if I want to do the C2 for sure now on the stock GTR turbos. Not much information out there about GTR builds with cams and stock turbo's (installation costs are killer). Given that we are RWD moving the tq a little to the right wouldn't be a bad thing for grip.
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Old 12-18-2018, 08:28 PM   #454 (permalink)
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While doing my research on the FI 2.0 turbos I looked high and low for dyno graphs with a built motor and 11:1 compression. I couldn't find any. It looked like SOHO push the FI Stage 2.0 the hardest on a stock block. From what I remember they were at 72x whp at 16psi of boost from what they posted. The best I can figure is that the FI 2.0 turbo's will fall off at 17 psi of boost. Now the question is why. Is the turbine housing of the GT28 frame turbo too restrictive or are they starting to push hot air on the compressor side. If I had to take a guess I would say it is the turbine side that just can't flow the exhaust gases out fast enough causing excessive drive pressure. There is a way to test this but nobody has done it. You can look at EGT pre turbo (drill the exhaust manifold before the turbo) to get a good idea or (you can drill a hole in the exhaust manifold before the turbo) take drive pressure readings. You can even do both. Here comes the issue. Testing is not cheap if you are not doing it yourself. So what I did was just look at Justin's build with the GT3076 turbo's. I picked a point on the dyno graph to look at boost pressure. I picked 4000rpm. The only problem with this is Seb was hold it back due to it being a stock block. Well, most of the FI 2.0 kits were on stock block so I decided the data would be close enough. I looked at the Boost psi at 4000rpm for several graphs. They all came up to be approximately 10 psi. What I don't like to do is push a turbo to it's max. Heat is the enemy and pushing it to the max will generate a ton of heat. I am not sure where the new FI 2.5 turbo's will start to fall off but I am sure MA will find out for me and let me know. I have a few more thoughts rattling around but this is the bulk of why I upgraded.
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Old 12-19-2018, 06:01 PM   #455 (permalink)
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Figured you guys would enjoy this video on why you should use a Torque plate while boring and honing your cylinders. I have
always heard them called deck plates.

http://www.youtube.com/watch?v=smJPKHy3_Zw
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Old 12-19-2018, 08:30 PM   #456 (permalink)
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I'm surprised he didn't discuss bringing up to operating temp while performing procedures; especially honing.....as that's even simulating further.
I've alway's heard them called honing plates.
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Old 12-19-2018, 09:31 PM   #457 (permalink)
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I'm surprised he didn't discuss bringing up to operating temp while performing procedures; especially honing.....as that's even simulating further.
I've alway's heard them called honing plates.
I have heard the same about heating the block up to operating temp. I have never seen it done.
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Old 12-20-2018, 10:45 AM   #458 (permalink)
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My engine is on the stand. Assembly is starting. I do expect some delays because we are right at Christmas and New Years. Moving along now. Progress is a good thing.
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Old 12-20-2018, 10:50 AM   #459 (permalink)
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I am thinking about having a 5 point rollbar installed again. Not sure if I will use a RPM unit or have MA build me one. This will take some more thought.
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Old 12-20-2018, 04:40 PM   #460 (permalink)
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I am thinking about having a 5 point rollbar installed again. Not sure if I will use a RPM unit or have MA build me one. This will take some more thought.
I had been waiting for MA-M (Brian) to schedule some time to build a custom roll bar for me but he won't be able to get to it until next winter - yep, next winter.
So I went with the RPM on Brian's recommendation - he said that they had installed a few of them and were good.
James at RPM advised me to go with the 6 point for a few good reasons.
Many of the 5 point customers wanted to upgrade to the 6 point after having them installed.
I can be done but it has to come back to the shop, put in a jig, and re welded.
The 6 point also gives more equal rigidity aiding in the launch.
So I got talked in to another upgrade :-)
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Old 12-20-2018, 06:23 PM   #461 (permalink)
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I won't be drag racing unless it is for fun so a 5 point will work just fine for me. It's still a daily driver. If it was a race car, it would get a complete cage.
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Old 12-20-2018, 08:02 PM   #462 (permalink)
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Originally Posted by Spooler View Post
I am thinking about having a 5 point rollbar installed again. Not sure if I will use a RPM unit or have MA build me one. This will take some more thought.
Very wise decision; as that is something on my wish list as well
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Old 12-20-2018, 08:56 PM   #463 (permalink)
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I have had an RPM 4 point rollbar installed for four years. I got it from a young lady that used to frequent the forum for great price probably will have them send me the parts to go 6 point while my motor is being built.

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Old 12-20-2018, 10:48 PM   #464 (permalink)
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Quote:
Originally Posted by Hotrodz View Post
I have had an RPM 4 point rollbar installed for four years. I got it from a young lady that used to frequent the forum for great price probably will have them send me the parts to go 6 point while my motor is being built.

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That's right, you have the 6 point tabs already welded to your bar on both sides.
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Old 12-20-2018, 11:56 PM   #465 (permalink)
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I just got done reading every post from the start to where it is now. WOW, the build has changed so much along the way. Crazy. This has been one heck of a journey and it is not over yet.
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