DD Revup engine build and a Vortech - MY350Z.COM - Nissan 350Z and 370Z Forum Discussion



Forced Induction Turbochargers and Superchargers..Got Boost?

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Old 04-13-2018, 12:06 PM   #1  
THIRZTY
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Default DD Revup engine build and a Vortech

Got an '06 touring with 6mt and 160k that was tired. I'm 3+ months into this right now, so I'm just uploading pics of my progress... which is slow because of $$,$$$ LOL. Engine had low compression and major blowby, consuming 1-2 quarts in 500mi. The tear down showed some worn bearings, carbon buildup on the valves, a broken ring land and a plugged cat. Got my 14yr old autoshop student pitching in too.

The engine was fully prep'd at a machine shop
95.75mm low compression CP pistons
manley rods
king bearings
ARP main studs
ARP L19 head studs
HR cooling mod
new valves
all new timing assembly
new oil pump
new water pump
lots of other new parts just cause... I know better
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DD Revup engine build and a Vortech-2017-12-25-14.42.05-hdr.jpg   DD Revup engine build and a Vortech-2017-12-26-12.20.43.jpg   DD Revup engine build and a Vortech-2017-12-26-20.28.25.jpg   DD Revup engine build and a Vortech-2017-12-26-21.03.08.jpg   DD Revup engine build and a Vortech-2017-12-27-17.05.08.jpg  

DD Revup engine build and a Vortech-2017-12-27-17.05.37.jpg   DD Revup engine build and a Vortech-2017-12-27-17.05.48.jpg   DD Revup engine build and a Vortech-2017-12-28-14.44.02.jpg   DD Revup engine build and a Vortech-2017-12-30-14.05.34.jpg   DD Revup engine build and a Vortech-2017-12-30-14.40.48.jpg  

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Old 04-13-2018, 12:12 PM   #2  
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Why LOW Compression pistons?
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Old 04-13-2018, 12:17 PM   #3  
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More pics

I bought a used V2 T-trim that needs a pulley and a couple misc items. My plan is to get the car running hopefully very soon, break the engine in and make sure everything is good before I put the Vortech on. Plus, I need more money... LOL
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DD Revup engine build and a Vortech-2018-01-16-07.56.18-1.jpg   DD Revup engine build and a Vortech-2018-02-18-16.52.25.jpg   DD Revup engine build and a Vortech-2018-03-03-11.35.09-1.jpg   DD Revup engine build and a Vortech-2018-03-03-11.37.06.jpg   DD Revup engine build and a Vortech-2018-03-03-11.38.25.jpg  

DD Revup engine build and a Vortech-2018-03-03-14.11.41.jpg   DD Revup engine build and a Vortech-2018-03-22-20.37.14.jpg   DD Revup engine build and a Vortech-2018-04-01-16.52.36.jpg   DD Revup engine build and a Vortech-2018-01-20-15.48.23.jpg   DD Revup engine build and a Vortech-2018-01-31-16.02.19.jpg  

DD Revup engine build and a Vortech-2018-04-07-15.32.11.jpg  
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Old 04-13-2018, 12:34 PM   #4  
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Why LOW Compression pistons?
I second this and those look REALLY low like 8.8

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Old 04-14-2018, 06:47 AM   #5  
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I would have to agree on the compression given the plans for Vortech and the way in which the blower makes boost.

But since it's done and the pistons have been bought, I'll make the OP feel better! The lower compression will allow for lower octane fuel, higher heat conditions, more aggressive tuning and overall greater margin of safety to preclude detonation. The engine will be better-suited for turbos where you can just turn the boost up even at low-mid rpms. A 9:1 engine off boost isn't noticeably different than a stock engine, imo, esp as gearing is so short on these cars.
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Old 04-16-2018, 07:16 AM   #6  
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I could tell a significant difference between 10:1 compression to 8.8 in a stock 130hp car out of boost.
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Old 04-16-2018, 07:26 AM   #7  
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I was planning to turbo the car at first, had already bought the internal engine parts and everything was getting prepped at the machine shop. Then I found the Vortech, I decided to just go with it and keep my options open. I'm not after records, just reliable power.

I put a Z1 flywheel and better clutch in too, but it appears I never took a picture.

Got my Z1 HFC's this weekend. Still need a new catback system though.
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Old 04-16-2018, 02:22 PM   #8  
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Nice build and nice write up...

don't sweat the comp ratio ... Like RC said - focus on the bright side and gives you an option down the road to turbo the car...which seems like a trend in the 350z community.

Is it too late to go with a better header setup??

just curious? Are those goats in the last pic of post #3?? Quite possibly the MOST random thing I've seen on this forum...

new trend - post pictures of your animals near your z while working on it (I'll go second)




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Old 04-17-2018, 07:59 AM   #9  
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Quote:
Originally Posted by bealljk View Post
Nice build and nice write up...

don't sweat the comp ratio ... Like RC said - focus on the bright side and gives you an option down the road to turbo the car...which seems like a trend in the 350z community.

Is it too late to go with a better header setup??

just curious? Are those goats in the last pic of post #3?? Quite possibly the MOST random thing I've seen on this forum...

new trend - post pictures of your animals near your z while working on it (I'll go second)
I want headers, but have other parts I feel are more important to get it going first. My car was bone stock... so as you all know this has gotten pretty expensive.

And yes... my kids Goats like to wander into the garage and see what I'm up to. Thought it was a great photo op!
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Old 04-20-2018, 12:34 PM   #10  
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Well I've been having a rough week with this thing. I had a no start/no spark condition and after trouble shooting everything I could think of I came up with nothing. Came here and did a search and found a thread where someone mixed up the cam sensors after an engine rebuild... so I checked and yup I had the bank 2 sensors flip flopped Engine fired right up after that!

During that trouble shooting I had noticed an oil puddle under the engine... ugh. Cleaned it up and found the lower oil pan wasn't sealing. Pulled it for the 3rd time now and re-sealed it. Waited 2 days to fill with oil and fire the engine again... only to find out I have no clutch.

Three master cylinders, 2 slave cylinders and about 10,000 pedal pumps and I still got no clutch. It's been completely drained and re-bled to the point there's no more air. Pedal has firm pressure but the trans will not go in gear with the engine running. I think there is something wrong with the position of the clutch fork and my gut feeling says I'm going to be pulling the trans. What could I have screwed up?
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Old 04-20-2018, 03:30 PM   #11  
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Is your clutch plate backwards? Mine was I bought a new slave and wildwood master before I figured it out :-(
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Old 04-20-2018, 03:34 PM   #12  
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Too funny i did the same thing
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Old 04-20-2018, 07:35 PM   #13  
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That's Sucks.... Sorry to hear that.

Did you verify that the Slave is moving?

What components did you replace in the clutch?

To verify Slave, just pump the peddle and have someone under the car watching the movment of the slave.
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Old 04-22-2018, 02:41 PM   #14  
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Slave is moving the fork, approx 5/8"

I pulled the fork boot and slave off, fork is attached to the throwout bearing and at rest is against the clutch fingers.

Flywheel, clutch, pressure plate and throwout bearing are all new from Z1

I think I installed the clutch disc backwards, it's the only thing I can think of... ugh
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Old Today, 08:01 AM   #15  
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Just pulled the trans last night... disc is in correctly and I see nothing wrong with the fork/throwout bearing. Ugh
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Old Today, 08:59 AM   #16  
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Verify the pressure plate is not defective.
I had one where one of the springs on the edge (retracting spring?) was on the wrong side of the plate and caused the clutch disk to not fully disengage

Also check that the pivot ball didn't snap and is there

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