Duffy's 1/71 Series 1 240z build

[Yarb]

That included his machine work?

 

[madkaw]

On 5/13/2020 at 12:07 AM, duffymahoney said:

3.2L engine parts arrived from Rebello today! 

JE Pistons, Eagle rods and king race bearings. Rod bearing clearances are spot on. Marine Crank did a fanstatic machining job on my extra long stroke LD crank.

Your pistons look just like mine with the dish . What CR are you shooting for and what CC chamber in the head ?

[duffymahoney]

2 hours ago, Yarb said:

That included his machine work?

 

No. I think a fully built Rebello motors are 8-20k. 
 

I didn’t get a Rebello kit. Just parts we needed. 
 

10:1 is the goal. I will only use ethanol free premium. 

[duffymahoney]

15 hours ago, Patcon said:

So what is in the Rebello 3.2 kit?

What do you have to provide?

What head will you pair with it?

From Rebello 

I got titanium valve retainers, pistons, rods, bearings etc...

I will be using a ported and bigger valve E31.

Machine work will all be done locally. 

Crank repair and stroke was done by Marine Crankshaft.  

[Patcon]

So not using the LD28 block?

That goes to 3.4L, doesn't it. I believe it requires a custom crank though

[duffymahoney]

5 minutes ago, Patcon said:

So not using the LD28 block?

That goes to 3.4L, doesn't it. I believe it requires a custom crank though

No. Just a N42 block bored. I’m not chasing a ton of hp. The 3.4+ is a lot of work and $. 
 

I actually think I will be at at 3.16 or something. But that sounds dumb. So 3.2L 

[jonbill]

I've got an LD28 block and crank build on the go. At 84x90 (stroke/bore) It's still only 3.2. The Rebello 3.35 is an 89mm custom Crower crank.

[73str86]

Duffy you've done some great work to this S1 240z! I've been lurking for a while. Nice to see some chronological history of your build instead of just Facebook.

- Jeremy Wilbur

[duffymahoney]

17 hours ago, 73str86 said:

Duffy you've done some great work to this S1 240z! I've been lurking for a while. Nice to see some chronological history of your build instead of just Facebook.

- Jeremy Wilbur

Thank you! Trying to make it a blast to drive, tinker, but also I can go back to bone stock fairly easily.  

[duffymahoney]

Project hand throttle is done and working. Should help with cold starts with my ITB. Until I get my iac system sorted out.

 

 

Edited June 7, 2020 by duffymahoney

[duffymahoney]

Well injectors are back and I have efi spark plugs. 
 

I spent a while tuning this weekend and with Tioga’s help I think I finally found one of my major problems.  The tps was set at its highest sensitivity. It would bounce from .34-.49. Thus causing the ecu to think it needs to apply timing and fuel and making it run terrible. I turned it to the lowest and it’s rock solid at 0% and .01 of a voltage change. 
 

Haltech is a nice system. But wow is there a lot of settings. 
 

If anyone needs Z car help. I would recommend Tioga with Automotive Solutions! 

[duffymahoney]

Some block porn! Just back from the machine shop. Final bore of 88.5. Time to make it pretty then assemble.