Datsun 280Z -77 - Build thread

[peter_s]

A lot of their stuff is kameari on their higher end builds, pistons/rods/exhausts etc

Yes I know. They make some good stuff!

Here are the specs:
Stage-4 Specifications
Base engine: L28 (N42 head + L28 block)
Bore X Stroke: 89mm (or similar) bore x 79mm stroke 3.0 liter setup. (83mm (3.1L) possible). Special cylinder block modifications. DSI Original crankshaft modifications.
Pistons: DSI ultra light weight pistons
Rods: DSI H-beam rods
Sprocket: Adjustable Cam Sprocket
Crankshaft: L28 crankshaft modified
Cam: DSI proprietary grind Stage-4 camshaft:
Valve train: DSI Big Valves, DSI valve guides, DSI Stage-4 series valve springs & Retainers, DSI Stage-4 Rocker Arms
Gasket: DSI Big Port manifold gasket
Head Gasket: Multi Layered Metal Head Gasket Compression: 11.5 or above

 

[Alphabettispaghetti]

That’ll be tasty....

All those DSI buts(mostly) are Kameari which is an extra bonus

 

[datsfun]

Here are the specs:
Stage-4 Specifications
Base engine: L28 (N42 head + L28 block)
Bore X Stroke: 89mm (or similar) bore x 79mm stroke 3.0 liter setup. (83mm (3.1L) possible). Special cylinder block modifications. DSI Original crankshaft modifications.
Pistons: DSI ultra light weight pistons
Rods: DSI H-beam rods
Sprocket: Adjustable Cam Sprocket
Crankshaft: L28 crankshaft modified
Cam: DSI proprietary grind Stage-4 camshaft:
Valve train: DSI Big Valves, DSI valve guides, DSI Stage-4 series valve springs & Retainers, DSI Stage-4 Rocker Arms
Gasket: DSI Big Port manifold gasket
Head Gasket: Multi Layered Metal Head Gasket Compression: 11.5 or above

You forgot the price spec ?

 

[jonbills]

Does that n42 have modified Chambers? N42 is one of the open chamber heads I think, so would be surprised to see 11.5:1 compression without pinking.

 

[chrisvega]

Very nice choice.

 

[SacCyclone]

Wow, you chaps are high end for sure.
Need to sell some cars or parts to afford this kind of performance....think I will just live vicariously through you chaps.

 

[peter_s]

That’ll be tasty....

All those DSI buts(mostly) are Kameari which is an extra bonus

You forgot the price spec ?

Hehe, I'd rather not think about that.

Does that n42 have modified Chambers? N42 is one of the open chamber heads I think, so would be surprised to see 11.5:1 compression without pinking.

I don't know. I'll ask. I know there are a lot of modifications both to the head and crank on this engine.

Very nice choice.

Thank you! Eiji sent me that video, sounds fantastic! 300 bhp too, nuts.

Wow, you chaps are high end for sure.
Need to sell some cars or parts to afford this kind of performance....think I will just live vicariously through you chaps.

Well, my engine needs work. And I think this engine is pretty good value actually. It's a lot of cash to spend, but I get a complete solution that I can install myself.

 

[Woody928]

.think I will just live vicariously through you chaps.

You won't be the only one Mike!

Sounds as this will have a mega engine to go in and compliment the other work, what sort of lead times are you working on? That header looking absolutely beautiful.....

 

[peter_s]

Sorry for my lack of updates, but things as always takes longer than expected.

The engine is out of Eijis car in the US, and is being put in a crate. I've taken the opportunity to order BRE spoilers straight to Datsun Spirit, then are being shipped in the crate. Might as well since shipping is so expensive.

We are waiting for the radiator, which is being modified to DSI standards. I think that's it, after that it's being shipped.

I received the exhaust manifold straight from Japan, it's a work of art!

 

[peter_s]

Oh yeah, forgot to mention: I drove the car over 2500 miles this summer. Not too bad! I used it as a daily for a couple of weeks, in general it was very reliable. Only some issues with old fuel hoses

 

[jonbills]

Which exhaust is that? It looks a work of art as you say.

 

[peter_s]

Which exhaust is that? It looks a work of art as you say.

Kameari, 48mm.

 

[peter_s]

Next level up would be this one

https://datsunspirit.com/shop/hand-...-stainless-steel-header-with-merge-collector/

 

[SeanDezart]

I have Seans Zstory race sport. The primaries are too small for my ports, the Zstory is 40mm. Mine is probably sold to my friend in the US, he has a 280ZX, so we are trying to figure out if it will fit his car.

I will keep the rear section and incorporate that into the 3 inch ypipe on my new headers.

This is the one I have ordered through DSI. It has primaries of 48mm.

He's a strange kid then as for several engine specs he's agreed with the customer using one or other of my headers (this is before they've bought one from me). Good luck with the tranplantation and fitting.

 

[peter_s]

He's a strange kid then as for several engine specs he's agreed with the customer using one or other of my headers (this is before they've bought one from me). Good luck with the tranplantation and fitting.

Hi Sean,

Yes, he said the Zstory is fine for up to his stage 2 or 3. After that the ports gets too big on the cylinder head, they are ported to 48mm. I can't argue with that

 

[tyroguru]

I just listened to the video of the dyno session that was posted previously! Oh my word, I need that sound in my life .

 

[peter_s]

I just listened to the video of the dyno session that was posted previously! Oh my word, I need that sound in my life .

I think the L-series is one of the best sounding engines made. Give it compression and revs and, oh my...

 

[Rob Gaskin]

I want a 2 pipe system like the 'works' cars, exiting at the back with the megaphones. I can still remember the noise from 1971!

 

[Rob Gaskin]

I just listened to the video of the dyno session that was posted previously! Oh my word, I need that sound in my life .

There is a long delay from throttle fully open to full revs - must be a big 'load' on the engine.

 

[tyroguru]

I want a 2 pipe system like the 'works' cars, exiting at the back with the megaphones. I can still remember the noise from 1971!

I was looking at some pictures of this earlier today. Don't want to hijack the thread but can anyone explain what the "megaphones" are in this system. Sounds great but also something the police wouldn't enjoy...