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Old 12-15-2011, 05:28 PM   #1
Dave D.
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06 Red Ltd.Wagon
I need a new tuner!

Default New motor for my hta68 -- Tranny update

Update: After 20k on the build 3rd gave up the ghost. We're going to go with a JDM 6-speed, which is a good option for my budget and driving style. Also will have added an ETS top mount and 1000cc injectors. Hope to pull a few more horses out, and have fun with the close ratios. And after this there will be nothing stopping me from getting a 20xgt or similar turbo down the line.



After 5000 miles of driving with a cracked #4 ringland, I finally got my build together. The car is at Maxwell Power, getting the old motor pulled. I had a lot of bolt-ons the stock block and it put out some decent numbers. And at 90 miles, 80k modded, I guess I can't complain. Here's the thread where you can see all the previous mods and hp/tq figures:

http://forums.nasioc.com/forums/show...=hta68+maxwell

Edit: Here's a quick list of the present mods:
- hta68 10cm turbo
- CAI into STi intercooler
- Agency Power UEL headers
- uppipe
- Hybrid ECBS/Manual boost controller
- Invidia Q300 catback
- Helix catted downpipe
- TGV deletes
- 725 injectors
- Gimmick turbo inlet hose

Probably forgetting something but you can check out the thread and graph.


These will be re-installed on a new Maxwell Power Factor SS motor, which has forged pistons, 4340 h-beam rods, and a balance and blueprint.

I am exchanging my D25 heads for some B25's to maintain the 8.5:1 CR, and Dom talked me into a set of 264 exhaust cams to help with spool and a little extra power. Along with new, heavier springs this motor will easily rev to 7500 (Dom says it will actually be good for up to 8K), which will give me a better 1-2 due to the relatively large spacing between the gears.

After the break-in tune, Dom recommends the new Accessport with its ability to take over the MAF readings, giving me ideal AFR's throughout the range -- before, the factory MAF was on the ragged edge. I'm also getting a catch can and a post intercooler air-temp sensor.

So, more dependability, a bit more spool, hp, tq, and the ability to go a lot bigger in the future -- time to save for a stronger tranny in the meantime!
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Last edited by Dave D.; 10-06-2012 at 08:08 PM.
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Old 12-15-2011, 11:19 PM   #2
gotsugg
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Sounds like another solid build from Dom and company.

Are you only adding exhaust cams? which kind are you going with?
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Old 12-16-2011, 11:21 AM   #3
Dave D.
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Quote:
Originally Posted by gotsugg View Post
Sounds like another solid build from Dom and company.

Are you only adding exhaust cams? which kind are you going with?
I think the cams are R-199-B's. I wasn't going to go for cams originally, as the budget was getting tight, but Dom had these in stock and recommended them for extra spool and more area under the power curve.

With my other mods the 10cm hta68 spooled very well -- full boost by 3500rpm. Another addition to spool would be even more desirable. The hta68 really likes a free-flowing exhaust, and with the AVCS these cams should allow a great deal of flexibility. The intakes aren't as important for my level of build, sort of quoting Dom here.

Dom also thinks the B25 heads may help down low as well. We'll see. Like I said, dependability first, and then a bit more power too would be a nice fringe benefit.
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Old 12-16-2011, 01:40 PM   #4
gotsugg
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Every mod I research and/or buy push's my power band to the right and I've often thought of going down to an hta68 sized turbo to do the very same thing you are doing. It sounds like it will be a very solid and fun to drive set-up. I would guess the 10cm and cams will make all the difference in the world. Keep us posted.

BTW, update your OP with the full mod list
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Old 12-16-2011, 01:51 PM   #5
Dave D.
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Quote:
Originally Posted by gotsugg View Post
Every mod I research and/or buy push's my power band to the right and I've often thought of going down to an hta68 sized turbo to do the very same thing you are doing. It sounds like it will be a very solid and fun to drive set-up. I would guess the 10cm and cams will make all the difference in the world. Keep us posted.

BTW, update your OP with the full mod list
Ok, I'll add in the other stuff. It's in the thread I referred to, but more easily read if I list it here.

Last edited by Dave D.; 12-16-2011 at 01:58 PM.
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Old 12-23-2011, 09:40 PM   #6
NW2TONE
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unde your hood makin
your **** go faster

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Dave just took his car home. Runs great. get some miles on that thing so we can tune it. Im glad you sprung for the balanced and blueprinted block and added cams and springs. now we can turn the redline up quite a bit.
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Old 12-24-2011, 08:14 PM   #7
Dave D.
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Quote:
Originally Posted by NW2TONE View Post
Dave just took his car home. Runs great. get some miles on that thing so we can tune it. Im glad you sprung for the balanced and blueprinted block and added cams and springs. now we can turn the redline up quite a bit.
Just to let everyone know that Craig, Dom and Dave busted their asses to get this job done on time and with perfect attention to detail.

I don't know if it's my imagination, but this new motor feels balanced, much smoother than the stock block, and that the cams are, even with this break-in tune, helping with earlier spool. Exhaust sounds better, too.

Can't wait to turn up the revs so I can stop bouncing off the rev limiter in first gear, as compared to the original motor.
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Old 12-24-2011, 09:57 PM   #8
gotsugg
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custom front mount HTA82

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cant want to hear how it tunes out.
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Old 01-02-2012, 03:10 PM   #9
Dave D.
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I need a new tuner!

Default

About 400 miles into the break-in tune now. Been topping off the tank every 200 miles to check mileage. First 200 miles about 18mpg -- second, about 21, more like normal, so I suppose the rings must be starting to seat. Motor is also showing more boost now.

There is still positive pressure at the oil filler cap, but it seems to be just air now, instead of the oily mist that came out when the ringland was broken on the old motor. Car does not seem to be using any oil.

Won't be long now until I take it in for the real tune. I think Dom's got me talked into an accessport this time, to avoid MAF issues.
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Old 01-02-2012, 03:24 PM   #10
gotsugg
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custom front mount HTA82

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How long before you will get tuned?
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Old 01-02-2012, 09:03 PM   #11
Dave D.
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I need a new tuner!

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Quote:
Originally Posted by gotsugg View Post
How long before you will get tuned?
Either next week or the week after. Can't wait!
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Old 01-12-2012, 03:03 PM   #12
Dave D.
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Just passed the 1k mark. After a drive to Spokane this weekend, looking to get tuned this Wednesday, the 18th. Supposed to be pretty cold next week. Wonder if I can crack 400 on Dom's dyno before he throws in the cold weather CF? (Go ahead and laugh, Dom!)

Still holding at 21mpg, not using oil at all.
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Old 01-12-2012, 03:18 PM   #13
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Have you thought about upgrading from the STI TMIC? I'd think you are pushing it at your power level.
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Old 01-12-2012, 03:21 PM   #14
binjoau
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MPS 510 whp GTX35R
Long Rod Motor

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I'm just in the early stages of a full , long rod motor build with MPS, using a GTX3576R shooting for 500whp.

I was curious as to whether you could "feel" the difference of a balanced motor. Glad to see someone with real world experience chiming in.

As far as the MPS team it's great to keep hearing all these good reviews. With your turbo setup and cam addition it should be a total blast to drive!

Subscribed.

Best of luck with your new setup,

Alex

Last edited by binjoau; 01-12-2012 at 03:27 PM.
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Old 01-12-2012, 03:26 PM   #15
Dave D.
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Quote:
Originally Posted by FCmaniac View Post
Have you thought about upgrading from the STI TMIC? I'd think you are pushing it at your power level.
Dom's not a real believer in bigger top mounts. He told me they eventually get heat-soaked too and then cool off less quickly.

I haven't checked out FMIC's too closely, but I don't want to compromise my front bumper beam.

I think my next bit of car savings will probably start going towards a stronger tranny. After this, who knows? The engine is built to take 500 hp down the line. Probably a bigger turbo and possibly a FMIC eventually...
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Old 02-18-2012, 02:53 AM   #16
Dave D.
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Update: 387hp, 411tq. Posted results in PPB section.
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Old 02-18-2012, 09:46 AM   #17
gotsugg
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Nice! Sounds like a lot of fun
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Old 02-18-2012, 01:01 PM   #18
cueballsi
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Congrats. Sounds great!

I am about to jump on dom's 2.1l gb
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Old 02-19-2012, 12:33 AM   #19
Dave D.
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Quote:
Originally Posted by cueballsi View Post
Congrats. Sounds great!

I am about to jump on dom's 2.1l gb
Yes, that sounds like a pretty good deal.
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Old 03-12-2012, 04:35 PM   #20
Dave D.
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I need a new tuner!

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A few thousand miles on the motor now. What a smooth, strong runner, Having the extra rpm's through first and second is a lot of fun; will run past 100mph in 3rd now.

Did a few stopwatch pulls: 60-90 from a standing 60, 3.6 sec; 60-90 rolling thru 60 2.9 sec; 40-90 from a standing 40 (2-3 shift inc) 5.0 sec -- in other words, this car has been a lot of fun on a couple of road trips I've taken to Oregon and back on Hwy 97, where passing semis is a fact of life. Sorry, but no 0-60 or 1/4 mile times until I get a better tranny!

A couple of minor bugs occurred which Dom has addressed to perfection. The attention to detail on this build was phenomenal. I am extremely pleased how this build turned out!

Last edited by Dave D.; 03-12-2012 at 05:04 PM.
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Old 03-12-2012, 11:12 PM   #21
gotsugg
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Great update Dave. Sounds like a lot of fun.
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Old 10-06-2012, 07:58 PM   #22
Dave D.
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New tranny coming. See first post for update. When all is finished and tuned (may take a couple weeks for the tranny to arrive) I will post another update.
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Old 10-06-2012, 10:43 PM   #23
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I really hope they can talk you into a rotated kit with a BW. Not to mirror the Foz Dave did, but to give me an idea of how a TMIC BW car will live like before I have to blaze that trail!
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Old 10-07-2012, 03:28 PM   #24
Dave D.
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Quote:
Originally Posted by Zee Biker View Post
I really hope they can talk you into a rotated kit with a BW. Not to mirror the Foz Dave did, but to give me an idea of how a TMIC BW car will live like before I have to blaze that trail!
Since I don't want to cut my factory beam this is certainly something to consider. The motor is built to handle over 500hp -- just how fast do I want to go?

I'll have time to consider since it's going to take awhile to save up for the bigger turbo. I'd been pretty much waiting for my tranny to go, and had some existing funds ready at this point.
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