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-   -   GTM Stage 1.5 supercharger build (http://www.the370z.com/forced-induction/76279-gtm-stage-1-5-supercharger-build.html)

snowsurfdirtx 02-27-2014 02:44 AM

Quote:

Originally Posted by Dzel (Post 2710999)
Those look very nice!

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I agree! My friend Austin did them for me. It was one thing I always disliked about the look of the car stock, and he said hey lets do em while the bumper is off.. so I gave in lol.. Can't wait to get them on the car.

snowsurfdirtx 02-28-2014 10:14 PM

Thermal dispersant coated... supposed to let more heat out than normal... now that I think about it, I wish I did the radiator, headers, etc. We'll see how well it works to keep the IATs down

http://i.imgur.com/Aua1YBC.jpg

snowsurfdirtx 03-05-2014 02:05 AM

bit of an update... had a lil bit of fitment issues with the intercooler and the front crash bar. just barely touches the bar. cut out the radiator supports for the intakes, finished up running the oil lines for the supercharger..

still though, no oil cooler and its starting to get frustrating. i'll call Sam again tomorrow morning.. i paid for 2day shipping on friday, and it still hasn't been shipped. hopefully he'll overnight it to me to make up for the troubles..

had to yank the headlights again to be able to tighten the clamps on the hump hoses, and had to cut part of the fender liner to get the piping that connects the blower to the intercooler to fit. gonna try and get the header thrown back in tomorrow morning, intakes installed (except still waiting on the red throttle body couplings, received orange couplings instead of red.. had to re order) then try and finish my oil filter relocation stuff in hopes that my oil cooler kit will be here thursday or friday.. we'll see..

Mr&Mrs 03-05-2014 04:36 AM

Sorry about your troubles with GTM, but your own the home stretch and this is a very solid kit. It's going to be a blast!

snowsurfdirtx 03-06-2014 01:33 AM

Quote:

Originally Posted by Mr&Mrs (Post 2720238)
Sorry about your troubles with GTM, but your own the home stretch and this is a very solid kit. It's going to be a blast!

Yeah, it is, I can't wait! I may just finish the kit, and install the oil cooler in a month or two. It's not even 60F during the day yet. Tired of driving my Focus, although it's fun too, I miss my Z.

decided to finish a couple things up.. i've been holding off so I don't go insane waiting for the cooler. broke a band clamp bolt but got that taken care of. BPV, header / art pipe, and oil filter relo to finish tomorrow.. waiting on red couplers for the intakes, and gotta finish some wiring but if Sam sends me my supercharged ROM to load, she'll fire this weekend :yum:

http://i.imgur.com/wz73jQI.jpg

TerribleONE 03-06-2014 01:40 AM

Hey man you will definitely still need the oil cooler even in 55 degree temps. Good luck with GTM

snowsurfdirtx 03-06-2014 06:41 AM

Damn. Lol thanks for the heads up man.

Guess I'll just wait it out.. getting impatient but rather be safe than sorry and have to rip the front end apart again

SS_Firehawk 03-06-2014 09:08 AM

Terribleone is right. I would consider 34 row a minimum for boosted cars after watching my temps. With two 19 rows (thermistatic) and GTM radiator with upgraded fans, it dissapates heat in a similar manner to a bolt on Z with a large oil cooler. This is using the stock bumper of course. If I did it again, I would have jumped on twin 25's instead (if they fit).

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snowsurfdirtx 03-06-2014 09:40 AM

Wow... is that in hot Vegas heat though? I went with the oil cooler add on kit for the supercharger kit. Comes with a Setrab 25 row, lines, Mocal in-line thermostat and the necessary brackets, etc. The 34 row won't fit on the side with the supercharger oil cooler.. maybe I'll have to add a 19 row in conjunction with the 25row like I believe Martin is doing on his track car..

I really hope I don't have heat issues.. with bolt ons, the car would reach 240ish only if pushed very very hard in the canyons / twisties in 75+ degree heat

Chuck33079 03-06-2014 09:41 AM

Yeah, but that was before you stuffed an intercooler in front of the radiator in a car with very little frontal area. Go bigger on cooling than you think you need.

snowsurfdirtx 03-07-2014 04:42 AM

Quote:

Originally Posted by Chuck33079 (Post 2722243)
Yeah, but that was before you stuffed an intercooler in front of the radiator in a car with very little frontal area. Go bigger on cooling than you think you need.

Very true, sir. I'm looking into the CSF radiator and a vented hood + SPAL fan on the oil cooler.. :tup: appreciate the insight guys.

snowsurfdirtx 03-13-2014 02:22 AM

I got my oil cooler finally! Took a bit of time, but all that matters is it's here and it's going all going in tomorrow AM!

ART pipe is back with new bung for my wideband, header had a sheared heat shield bolt that got drilled out.. gonna loc tite that b!tch in though. My drill skillz aren't as good as I thought. Got some wiring to finish(I HATE WIRING) and yea..

Last thing, TUNE. Sam needs to shoot myself and martin82 over our ROM files and we'll be ready to rock

I told my GF we could take a nice trip this weekend, so that I can have lots of Z time and she can't make me feel bad for it :D

snowsurfdirtx 03-21-2014 03:31 AM

SHE LIVES... started her up a couple times, topped off oil, s/c oil, etc. Nerve wracking for sure, but it fired! No tune from GTM still, gotta call Sam again tomorrow.. really really want to shake the car down this weekend!

Here's a quick video.. more to come of course, I'm just excited it runs, doesn't leak so far and that I didn't break it :rofl2: sorry for the music, bluetooth magic from the car made it start playing.

edit: i dunno how to embed youtube videos, so if it doesn't work heres the link lol
editedit: found out how to embed videos. lol

http://www.youtube.com/watch?v=E0tJFZqTAJY

Mr&Mrs 03-22-2014 09:50 AM

Awesome! Can't wait to see her on the road.

snowsurfdirtx 03-22-2014 02:23 PM

Thanks man, she saw some street action yesterday! Sam@GTM sent me my tune late yesterday, everything is looking ok, no leaks still and I drove her 5 miles... in my neighborhood :rofl2: neighbors were watching me, looking confused. Anyway, I'm trying to figure out the log files I have to determine if its safe to drive more and break the blower in, but here's a few revs after I got back from putting around the neighborhood and topping off fluids and stuff.

Sorry for the camera angle, I was excited. :yum:

http://www.youtube.com/watch?v=b6j7fP5FxF0

Dzel 03-22-2014 03:47 PM

Links not working

How's your exhaust smell? As in richness, air/fuel readings?

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snowsurfdirtx 03-22-2014 04:50 PM

the youtube link? weird. It idles around 14.8, when i jump on the gas it jumps down but I haven't given it a good romp WOT yet. It usually jumps around between 14 and I've seen it as low as 10.. Bank 2 is leaner typically than bank 1, and more 'jumpy' in the log. Exhaust smells normal, really. I've got ART pipes. No CEL or anything.

Dzel 03-22-2014 04:59 PM

I believe and I may be wrong but as long as your in between 10 and 17 your alright


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JWillis72 03-22-2014 05:30 PM

Quote:

Originally Posted by Dzel (Post 2748900)
I believe and I may be wrong but as long as your in between 10 and 17 your alright


Sent with tapahoe

When you coast its ok even to be higher that 17 because the motor is just giving enough gas to keep it running but on the gas it shouldn't be anywhere near that.

Dzel 03-22-2014 05:34 PM

You definitely need to get your tune done asap.

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snowsurfdirtx 03-22-2014 05:39 PM

Ya, it maxes out at 60 or something when you let off the gas.

I really do man.. The shop I want to have tune it is booked till like the 15th, otherwise I would be taking work off monday to tune. So if this tune looks ok, I'll be able to break it in and putt around till then. Hopefully Sam looks at my log file and sends me a new file with a little more updated tune to throw at it

snowsurfdirtx 03-22-2014 05:40 PM

Also, I have the Cipher log if anyone wants to take a look :excited:

JWillis72 03-22-2014 06:03 PM

My car runs 14.7 at idle so that sounds right but I agree with Dzel, don't trust a canned tune.

1slow370 03-22-2014 07:09 PM

factory a/f at idle is around 15.3, sounds like you are fine you want it stay under 12.5 boosted and around 11.5 in the higher rpms when you are on it. do a WOT and check the log. if cipher logs knock count you can check that too. most of the startup canned tunes are fine they are usually rich enough to keep you out of trouble.

Edit: the 12.5 and 11.5 afr's may be low when you get it tuned they can push it leaner so long as you don't knock to make more power

Mr&Mrs 03-22-2014 07:45 PM

I'm on a slightly tweaked canned tune so I guess it isn't really anymore. Your idle is fine maxing out with a coast is also fine. You need a WOT pull to see what you lean out to in the higher RPMS. Without a knock check I don't like to go over 12 WOT but that's just me being cautious I guess.

snowsurfdirtx 03-23-2014 11:30 PM

I'm around 12.3 WOT and in boost, idle kinda jumped around today, I saw 13s a couple times but once it sits and stabilizes it likes to be around 14.4-14.7. I need to get a bit better of a WOT pull in the upper RPM band but it seems low 12s-high11s I believe. I only went into higher RPM a couple times, and I was fairly focused on the road. It definitely has some balls, I saw probably 7lbs around 6k rpm. Didn't wanna run it too hard, still shaking out some bugs and breaking it all in nicely.

One thing that drives me NUTS, around 2100-2500rpm theres a squeal somewhere. Not sure where, I'm not toooo worried about it, but it's insanely annoying. Not sure if its blower related, idler pulley related, or just some sorta resonance. Very happy so far, setting up a tune and dyno time tomorrow.. The buttdyno though for today, felt around 420-430whp and 330ish wtq if I had to guess. Excited for tune and being able to hammer on the car :) Had to stop driving, no bumper + exposed oil cooler = barely 180 degrees, and after 45mph, it would drop below 180, but bumper goes on tonight, so I think I'll be ok once it's on.

snowsurfdirtx 04-05-2014 09:08 PM

finally got the car on the dyno today, but we were losing fuel at the top end. gotta check a couple things, talked to Sam@GTM and he recommended putting a fuel pressure gauge in and seeing what was happening, he said it might be a bad pump. Gonna pull the fuel bowl out again and check things, kinks, etc. Only did a couple pulls but couldn't get it to stop leaning out at the end.. the strainer at the bottom of the fuel pump on the pickup was touching the bowl so i think that's the issue. Timing wasn't touched from the stock GTM ROM file, so there's still a bit of power to gain.. car ran good though other than that horrible lean condition at the end :( first run, which the video is of, the car made 459whp on the original gtm canned tune. car for now is rev limited to keep it out of the lean spot at the end.. :tiphat:

http://i.imgur.com/Od6bv6A.jpg
http://www.youtube.com/watch?v=zpiKlaFVAK0

Zat_Zuma 04-06-2014 08:36 AM

I would recommend changing out the stock fuel line as I believe it's too small to provide enough fuel at the top end. My fuel pressure was dropping to 20 psi @ 6000 RPM. :eek:

I've since upgraded to CJ motorsports twin fuel pump and return fuel system. Overkill, yes, but I won't have any more fuel problems ;)

I recommend changing out the fuel line to a proper size and a fuel return system.

Chuck33079 04-06-2014 09:03 AM

Quote:

Originally Posted by Zat_Zuma (Post 2770803)
I would recommend changing out the stock fuel line as I believe it's too small to provide enough fuel at the top end. My fuel pressure was dropping to 20 psi @ 6000 RPM. :eek:

I've since upgraded to CJ motorsports twin fuel pump and return fuel system. Overkill, yes, but I won't have any more fuel problems ;)

I recommend changing out the fuel line to a proper size and a fuel return system.

The first place I would start would be the fuel pump relay like the one that GTM makes. Someone did a writeup of how to make your own.

snowsurfdirtx 04-06-2014 11:57 AM

i'll check out the CJM kit and the fuel lines..interesting

Chuck, I have the voltage stabilizer. I'l have to check my ground i suppose.

I really think it may be the the fact that the strainer that attaches to the pickup on the pump is pressed against the bottom of the fuel bowl. I thought it'd be ok since it pulls from all directions through that strainer but im thinking thats the issue and it needs to be off the bottom of the bowl. i talked to Sam@GTM yesterday and he said it could be a bad fuel pump too. well see.. such a bummer after all that hard work, but man when I saw that baseline flat 460whp i was so glad it all worked lol

Voice59 04-07-2014 07:19 AM

Any input on whether or not to get an aftermarket radiator?

COSMO 04-07-2014 07:26 AM

I have seen the stock fuel lines go over 600whp but not saying its a bad idea. If your not running over 500-550whp I wouldn't worry about it. I would consider running a better to fuel pump like the aeromotive stealth 340 ..

R3drckt09 04-07-2014 01:46 PM

I'm curious what the actual issue is, you really do see a bunch of FI guys getting away with just an upgraded pump/injectors.

martin82 04-07-2014 01:47 PM

I went ahead and ordered Phunk's fuel pressure gauge

Nixlimited 04-07-2014 03:31 PM

Quote:

Originally Posted by martin82 (Post 2772100)
I went ahead and ordered Phunk's fuel pressure gauge

Great place to start so you can diagnose the issue. As Tony @ FI has mentioned during the development of his TT kit, these cars have fuel pressure issues at top RPMs under boost--even on stock block boost levels. Given that your SC is gonna need even more fuel than the turbo kit at around the same power, you should probably be considering an upgraded fuel system no matter what the acute issue is here.

BTW, congrats on some nice power!

Z eliminator 04-07-2014 04:03 PM

nice dyno chart.

Z

snowsurfdirtx 04-09-2014 04:08 AM

Quote:

Originally Posted by martin82 (Post 2772100)
I went ahead and ordered Phunk's fuel pressure gauge

Just did the same.. :rofl2:

JckHmr 05-07-2017 06:04 AM

It's been a few years. How's your kit holding up and did you fix that fuel starvation??


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