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Take 2 let's try again :)


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While waiting for the car to return from France .......still 😂

Should be home.next week finally! 

 

I have been keeping busy making plans on which way to go with the build 

I've been through many different thoughts on what to do.

I was tempted to stroke it out to 4l but you can add 3k to the bill for that so I had to rein myself in a bit 

I was also tempted to flog the charger and do a mega NA build 

But I have settled back at doing a mega bomb proof build on what I have 

 

I don't necessarily want more power than what I had it was bloody fast anyway I just to be able to drive the car as hard as I like for as long as I like at the power I was at.

 

I think I'll be switching from ecutek to a syvecs ECU aswell after chatting with Ian at Litchfield and Romain at Racecal  this will offer much better control and potential to keep the engine safe.

 

I'm also going to go to town on the cooling mods for the trying to keep the z cool 

I'm having Colin at creative aluminium make me one of his triple pass rads and I'll be doing lots of ducting to the oil cooler and rad to make sure they are as effective as possible

 

So the parts list for the engine so far consists of 

 

Product #: dyHG-VQ37.96
Dynosty Pro Seal Head Gaskets. 96mm x .5mm VQ37VHR - Nissan 370Z / Infiniti G37
-
     
       
Product #: jep321266
JE Pistons Nissan Nissan VQ37VHR 96mm Bore (+.50) 10:1 Pistons - Set of 6
-
     
Product #: arp202-5801
ARP VQ35 Main Studs Z33 Z34
And
ARP 625 head studs 
     
Product #: bouVQ-OPG-VHR
Boundary Engineering Billet Oil Pump Gears, VQ35HR VQ37VHR - Nissan 350Z 370Z / Infiniti G37
-
     
Product #: brcBC6224
Brian Crower Connecting Rod w/ BC625+ Fasteners - Nissan 370Z 09+ VQ37VHR Z34
-
     
       
       
Product #: 13028-0708KT
Nissan OEM Timing Chain Kit, VQ35HR VQ37VHR - Nissan 350Z 370Z / Infiniti G35 G37 Q40 Q60
     
Product #: appATI918584
ATI Super Damper Street Crank Pulley, Stock Size 5.5" - VQ35HR VQ37VHR - Nissan 350Z 370Z / Infiniti G37 Q60
-
     
 
     
       
Product #: A0101-EY04J
Nissan OEM Engine Gasket Repair Kit - Nissan 370Z 09-12 Z34
     
Product #: 13070-JK21C
Nissan OEM Timing Chain Tensioner LH VQ35HR, VQ37VHR, VR38DETT
     
Product #: 13070-JK21B
Nissan OEM Timing Chain Tensioner RH VQ35HR, VQ37VHR, VR38DETT
-
     
Product #: WPN116
Aisin OEM Water Pump, VQ35HR VQ37VHR VR38DETT - Nissan 350Z 370Z GT-R / Infiniti G35 G37 Q40 Q50 Q60 FX35 FX37 M35 M37 QX50 QX70
-
     
Product #: 13085-EY00A
Nissan OEM Side Timing Chain Guide LH, VQ37VHR VR38DETT - Nissan 370Z GT-R / Infiniti G37
-
     
Product #: 407737-13
Stillen 9 PSI Supercharger Pulley

 

Edited by nissanman312
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1 hour ago, andy james said:

Nice winter project mate!

Looking forward to seeing the build.

Cheers dude 

 

Looking forward to getting into it over the next few weeks hopefully

I just have to make some space in my barn and then will make a start on the strip 

 

 

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  • 2 weeks later...
  • 1 month later...

Busy day today with massive thanks to @350Butcher

The engine is out and ready to be stripped at some point soon 

 

Seeing it like this feels like it will never go again 🤣 but I'm looking forward to it going back together solid as an ox and ready to take the boost thrown at it 

 

watch this space 

 

 

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23 hours ago, andy james said:

Good work Nick.

Been down this road a couple of times. 
She will be back stronger, faster………

Hoping I only do it once mate 😅

With Martin working his magic and me staying out the way it should be sweet 

 

I'm not chasing numbers to badly but very high 5s with a nice linear power band would be a bit exciting for me personally

Usable reliable power is the brief  

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Got the boys on the job!!! Subscribed

 

1483261735_Screenshot_20221224-1756312.png.09378684de2e9e5f93155464851e4601.png

 

Crankcase breather vent to atmosphere I always thought was a bad idea as you get no vac assist? plus a misty engine bay. Ideal set up would be to plumb to pre supercharger, bit of vac and fresh air. 

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16 hours ago, davey_83 said:

Got the boys on the job!!! Subscribed

 

1483261735_Screenshot_20221224-1756312.png.09378684de2e9e5f93155464851e4601.png

 

Crankcase breather vent to atmosphere I always thought was a bad idea as you get no vac assist? plus a misty engine bay. Ideal set up would be to plumb to pre supercharger, bit of vac and fresh air. 

To be honest Dave I can't really remember how it all was Bennet set this up about 6 years and 40k miles ago when we installed the kit on this motor he did it as per his lengthy write up I believe 😜

 

I had 2 catch cans running which collected a fair bit of @*!# from the pcv within reason but the future plan is for something like this setup 

 

 

 https://sohomotorsports.com/products/soho-motorsports-hr-vhr-catch-can-combo

 

What is it you're suggesting plumb it into the intake ? If so I don't like that idea it would gum the charger up a treat 

 

 

 

Edited by nissanman312
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I have no experience with boosted setups and if it's been running like that for this long it can't be bad. If it was plumbed into the intake pre charger via a catch can, you'd get both a bit of vac and wouldn't gum the charger up. 

 

Thinking out loud, the crankcase air system isn't closed loop. On idle the pcv valve is open (one per valve cover on Z34) which would create a vacuum in the engine, so there's another two ports on the valve covers with no one way valve allowing fresh air to be drawn into the engine. When the pcv valves are closed under throttle or boost, positive crankcase pressure can vent via the valve less ports. Under boost currently the crankcase pressures aren't escaping under the aid of vac. 

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I don't fully understand it all mate I was led by Bennett on the initial set up for boosted application

The one thing I would like to do this time is have the ones that had filters on into cans that would be ideal I think.

 

If I remember rightly it came down to packaging last time and the very limited space to put anything

 

Theres no rush this time around and the engine bay might even receive some dress up 🤣

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Yeah I can imagine, very tight on space in there. 350z used one pcv valve and one breather port, one on each valve cover. For the 370z, Nissan felt the need to double their efforts so used x2 pcv valves and x2 breathers crankcase pressure focused.

 

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I remember clearly Andrea Preuninger head of the GT department in Porsche, saying for the 991.2 they were able to increase engine performance and one of the ways was to reduce the oil pressure. So made sense in my little mind that having a handle on crankcase pressure, would also have an effect on oil pressure - more pressure/heat, less performance. 

 

Looking forward to the build though fella

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A little more progress today it's to the point of opening up now.

Exhaust manifolds off 

Intake manifold off 

Remaining coolant hoses off 

Fuel rail off injectors out 

Coils and plugs out 

I'll be sending the injectors for flow testing and cleaning before they go back in last thing we want is a injector ruining the new engine.

 

 

 

 

 

 

 

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Edited by nissanman312
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  • 2 weeks later...

Bit more work done this weekend and we're almost ready for the machine shop 

 

I was hoping in a way to see a obvious failure but nothing was really apparent apart from  little  inconsistencies on the gasket as if the coolant and washed it a bit but that's clawing at straws.

 

 Hopefully It was just a case of what the yanks call head lift due to the massive cylinder pressures experienced when adding boost to a high compression motor.

 

Once the parts are cleaned up a bit and the heads are stripped down it will go off for machine work and I'll have the block checked for any cracks etc but on visual inspection it all in realy good order.

 

But as for the rest of the engine it's all in realy nice condition which is testament to a good calibration from Litchfield and excessive oil changes and maintenance.

 

so if you're thinking of boosting and if it ruins your engine the answer is no just don't ad to much boost 😂

 

So enough waffle here's  some pictures

 

 

 

 

 

 

 

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Edited by nissanman312
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In a bid to keep the z cool with the new motor I thought a nice rad upgrade wouldn't go a miss.

 

I had previously ordered a mishimoto rad as it keeps the AC but the quality didn't look the best so I opted for koyo and will have the stock AC condenser mated to the koyo 

 

The welds on the koyo are much tidier than the mishimoto for a start so that a good sign some care was taken in the making of it 

 

There will be a little trimming involved here and there  but at this stage we are far from stock configuration so it's all about what works from here on in 

 

Heres some koyo porn 

 

 

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