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Forced Induction Turbochargers and Superchargers..Got Boost?

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Old 07-12-2016, 04:06 AM   #41
Juztin
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Update: 7/11/16

Had my local NM Nissan shop do a conversion to E85 on the car. In NM the last big dyno on 91 was 602/440.


That was with a 17.7 psi spike. On E85 with a 18 psi spike, the car did 674/598. So for the roughly same boost, gained about 70hp/160 tq. Gotta love that E85.

The actuators can't hold boost, so the 18psi tapering off is about it. It's too much of a hassle to drop the motor to convert to the external wastegate kit I have for it, so just going to look into Phunk's custom manifolds and bigger turbo's. Gotta move to a twin disc clutch as well.

The GTM stage 2 might be able to hit 700, but diminishing returns there with the effort to try, just easier to upgrade the turbo's and have a ton more airflow to work with. But alas, just going to enjoy getting used to E85 which is a big move for me as the closest station is about 25 miles away.

Does anybody store E85 in the garage? I'm thinking about going with a big 55 gal drum route to keep measured E85 (pump + E98 blend), but total newb to E85 so curious how anybody else that lives in the sticks does it.

Vid -

Last edited by Juztin; 07-12-2016 at 04:12 AM.
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Old 07-12-2016, 08:19 AM   #42
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Damn....nice numbers!

You going to drive for a while before new clutch, etc?

Interested to hear about drivability/ traction.

Congrats!!!
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Old 07-12-2016, 08:53 AM   #43
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nice... E85 is where its at!
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Old 07-13-2016, 03:11 AM   #44
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looking good
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Old 07-14-2016, 08:34 PM   #45
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You can keep it in your garage. Just be smart. Use the right container, and make sure you use it up before 3-4 weeks so that you don't start collecting water. It's less volatile than gasoline.

I probably wouldn't keep 55 gallons in my garage. Maybe 15-20 or something like that (a tank worth and change). But I'm not THAT far from a station.
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Old 07-16-2016, 10:06 AM   #46
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Haven't got a chance to rip it around on the streets with the e85 tune, car is overheating easily. Can take it around the block off boost entirely and load for that matter, think like 5% throttle. Just need to rev it into the 3K+ rpm band and the temp guage will start to raise. Got it to 3/4 on gauge where the water was boiling in the overflow tank.

Shops going to try to burp the hell out of it as thinking it's just air in the system for now. Only question is how it got there, there's no white smoke (or any smoke for that matter, burns clean). No coolant in oil or oil in coolant. Thinking maybe these past dyno sessions and road tuning caused some latent air in the system to cause more steam spots and more air in the system. For the moment part of the overheating club, hopefully it's just a burping fix as I'm not too inclined to hope for it being a head gasket.

For science, I did let the car get back to operating temperature cruising around with the engine no higher than 2.5K rpm's and did a boost blip in 3rd and the temp gauge went from around the usual 3/10 to about 6.5/10 with 2 boost blips done letting the engine get back down to safe temps. I'm hoping it's jut a lot of air in the coolant at this point.

What's another good way to isolate a head gasket issue? Will it show up in a comp test? As otherwise the car seems to be running clean, albeit undriveable due to the heat spikes. Cruising it will cool back down so long as you stay below 3K rpm, once you go 3K+ rpm it starts to rise (the gauge). Although sitting at a light/stopped it won't cool down, just really not rise, or fluctuate a little slowly.

This was also all done with the heat outside about 100 deg., but to be fair the car previously has never given me issues in hot weather like this on 91/off actuator pressure. Only diff now is the car can push to about 18psi/tapering down with the e85 tune.

Last edited by Juztin; 07-16-2016 at 10:24 AM.
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Old 07-16-2016, 11:01 AM   #47
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That is not great to hear.

Fully bleed the cooling system. You can be almost positive you got it bled if the heat blows full hot at engine idle. If you blast water out of the overflow when you go into boost after this, that probably a headgasket issue. Went through this in 2004 before the better headstud solutions came out. A lot of guys did. What studs did you use and what are they torqued at? Which headgaskets?

My headgasket issue did not mix coolant and oil, did not burn any coolant... the only thing it did was push water out the overflow (And onto my windshield via the hood vents). This was with the original ARPs that had a low torque spec, 60-70lb or whatever it was. Then I went to 1/2" studs at around 100lb that engine has now been through 12 years and 2 owners after me still making big power.

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Old 07-16-2016, 12:26 PM   #48
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Could be as simple as rad cap...... Mine was a bad thermostat.

Good luck
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Old 07-16-2016, 02:21 PM   #49
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Hey there Charles,

Thanks for the experience note in your previous situation as definitely will have to keep that in mind troubleshooting this. The car has L19's and from what I vaguely recall during the build I believe they were tightened down to either 85 or 95 lb/ft, can't exactly remember which. Stock new HR head gasket was used at time of build. Only reason I went with stock head gasket was people saying they were generally pretty strong for boost in the HR. That being said, I'm kinda kicking myself to of not gone with a Cometic or something stronger at the time for $180 dollar gasket set.

Next thing is to keep an eye on the overflow tank like you say. When I first experienced it hot enough to boil the coolant the overflow was about 1/3rd full, but that was without boost.

When it's cooler outside about 80/70's I'm going to drive it around and get into boost to see if the overflow maxes out like you say.

Thnx eZg, yea going to try all the small cheap parts first before absolving to settling on it maybe being a HG issue unless if like Phunk mentions it's shooting coolant out in boost into the overflow. Only thing right now is both hoses out of the radiator get hot (so assuming that rule out thermostat) and you can feel the water flowing so don't think it's the pump, so that might just leave the cap, or HG...

I don't think additional timing would make that much of a difference heat wise would it?

I might swing it by the Nissan dealership to see if they can do a forced coolant change on it just to absolutely rule out the cooling system having some bubbles that don't want to get out thru normal means. The rear bleeder looks like it was part of the GTM kit and it's stripped so can't turn it to try seeing if any air is sitting there, didn't notice that till now ugh.

EDIT: Just took the car for a spin after the burping and it didn't overheat, although to be fair I babied it, but even when I was babying it before it was easy to overheat. Did 2 WOT boost (3-4th gear) runs before I got close to my house and temp gauge didn't move. Just checked the reservoir and it's about 3/4 full which was where it was when I left the shop. Checked the overflow hose and there was barely 2 drip's that evaporated about 2" past the end of it but thinking that was just condensation at this point. Still 100 degrees out ugh, going to wait till later to test it when it's getting dark and cooler and do some boost. Definitely felt the power and torque, here's to hoping it was just air before.

Last edited by Juztin; 07-16-2016 at 05:09 PM.
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Old 03-01-2017, 07:10 PM   #50
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Update 3/1/17:

VQ started signing to me a song of death recently.


So just dropped her off to swap motors to a RJM block, and we're going to re-use the VHR crank, and go with tougher rods than Eagle (open to suggestions, thinking Carillo or Manley turbo tough), with 11:1 CP/Manley/Arias pistons for E85 build.

Going to look to keep running the GTM 272 turbo cam, but if that doesn't pan out for whatever reason will probably roll with an aggessive JWT one. Need to get some misc stuff as well like a harmonic balancer, twin disc clutch, and the last cherry on the **** sundae (CJM goodies with his new tuner lower end manifolds/piping kit!):









Gonna roll with GTX3076R Gen II turbo's with .82 AR Tial Housing. Will be a while before all this is working together, but will keep updates periodically. This will be a chance to see if the HG was shot as the car still pushed coolant up even till now so we never did get that one figured with dealing the usual ways except for looking at the head gasket due to the pulling the heads complexity.

EDIT: Going to keep the top portion of my GTM TT kit, and use this to address the limited bottom portion, love this option out there for us folks to Frankenstein as we want with big turbo options.

Last edited by Juztin; 03-02-2017 at 07:55 AM.
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Old 04-08-2017, 05:08 AM   #51
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Quote:
Originally Posted by Juztin View Post
Update 3/1/17:

VQ started signing to me a song of death recently.

Sound of Sick VQ

So just dropped her off to swap motors to a RJM block, and we're going to re-use the VHR crank, and go with tougher rods than Eagle (open to suggestions, thinking Carillo or Manley turbo tough), with 11:1 CP/Manley/Arias pistons for E85 build.

Going to look to keep running the GTM 272 turbo cam, but if that doesn't pan out for whatever reason will probably roll with an aggessive JWT one. Need to get some misc stuff as well like a harmonic balancer, twin disc clutch, and the last cherry on the **** sundae (CJM goodies with his new tuner lower end manifolds/piping kit!):









Gonna roll with GTX3076R Gen II turbo's with .82 AR Tial Housing. Will be a while before all this is working together, but will keep updates periodically. This will be a chance to see if the HG was shot as the car still pushed coolant up even till now so we never did get that one figured with dealing the usual ways except for looking at the head gasket due to the pulling the heads complexity.

EDIT: Going to keep the top portion of my GTM TT kit, and use this to address the limited bottom portion, love this option out there for us folks to Frankenstein as we want with big turbo options.
What causes the noise/rattle?
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Old 04-12-2017, 11:18 AM   #52
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Car is still sitting in the shop lot as backlog work, so no idea just yet. Just was ordering all the big ticket parts like turbo's, clutch and what not this week. Gonna be 'fun' to see how long the GTX3076R G2 is on back order -_-. The manley pistons already shipped, so that part was quick at least
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