HS30-H

What? Have you missed the point AGAIN? The whole point of the NEW Fujitsubo system - ie, the one that this thread started in order to discuss - is that it has been modified to give extra ground/road clearance for use on lowered cars. As Jason pointed out a few posts back, that means it is even MORE unlikely to fit a 280Z or any S30/S31 fitted with an R200 diff. This revision isn't aimed at the late model export market any more than the previous version was. I'm gobsmacked that anyone can not see that...

Missing the point (again). The above was posted in reply to the comment that the diff crossmember on a US market 240Z was not suitable for twin pipes, to wit: "Even on a bone stock US 240z differential support crossmember only has a small u shaped cut out to route the exhaust pipe... not twin pipes." It's not the case. Clearly.

Stock Nissan twin pipe system for reference:

Sean, in several of your posts on this thread you've been pointing the finger at Fujitsubo. This issue is clearly nothing to do with Fujitsubo, or their product. Far from saying the same thing, I've been trying to point your way to understanding the issue here. Has the penny finally dropped? Distributor schmistributor. As I said before, better to talk to the organ grinder than his monkey. The Whitehouse Performance sales literature is wrong, not Fujitsubo.

Addressing the above I highlighted in bold: This is the KEY issue. Fujitsubo don't carry a Fujitsubo Legalis R system that caters for R200-equipped cars. If you've been misled by your supplier, take it up with your supplier. Addressing the above I underlined: The stock US 240Z differential support crossmember - in common with all the contemporary differential support crossmembers for other markets and models - had TWO exhaust-fitment cutouts in them, along with the potential for two exhaust pipe hanger mounts. This was designed to cater for the factory twin pipe exhaust which was stock fitment on the S20-engined models and an extra-cost showroom option on the domestic L20A and L24-engined models. The pipes exiting the resonator diverged and routed either side of the diff, one lower than the other, then turned and merged again to enter the rear box one above the other. Twin pipe systems were an original design and engineering consideration on the S30-series Z cars.

Yes. That's the whole f***ing POINT....! No compatability with R200-equipped cars, as per Fujitsubo's advice.

Probably a stock, factory replacement exhaust. Like the majority of those 250,000 (LOL) '280Z' owners did... If going aftermarket, I'd suggest that any '280Z' owner takes the time to ensure that the manufacturer makes an exhaust system which is appropriate to that specific vehicle. Did you spot the GS30 system listing on the Fujitsubo applications page snippet I posted? Just double checking, as you appear to have overlooked a fair bit of the data presented to you thus far...

It's all there in black and white (and red):

I think you really ought to be able to see when I have my tongue planted firmly in my cheek. They do cater for the spawn of the devil. I don't understand why you think they don't. Perhaps - like other people - you are not reading the literature from source? That seems to be one of the big problems here. Try talking to the organ grinder, not his monkey.

Because they are the spawn of the devil, perhaps? In Fujitsubo's case, they clearly cater for the GS30 model. It's in their literature. I know other manufacturers do too. You just have to ask them. Just make sure you keep your voice down when talking about the 'Limo Version'...

Sean, are you actually on another planet altogether? I just can't get my head around your way of thinking on this. What responsibility have Fujitsubo themselves got in any of these reported fitment issues? How can you expect a company of their size to curate every single sale through a foreign re-seller? Their contract is with the re-seller, not with the re-seller's customer. It's not within the realm of Fujitsubo's responsibility to stop people buying items which are inappropriate to their vehicle through each re-seller, and every time. If your exhaust business gets big enough you will experience the very same issues. It's the nature of international trade. The long, tall and short of all this is the simple fact that Japanese market S30-series models didn't receive the R200 differential until after September 1975, and that's why it is Fujitsubo's cut-off date for correct fitment. If anyone doesn't realise the significance then they simply haven't asked the right questions.

If anyone actually wants to buy a Spirit Garage system, I recommend they contact Spirit Garage direct - in Japanese - to get the best price. Good discount available.

I did read through the whole thread before commenting. You seem to be missing my point. Fujitsubo - as far as I am aware - do not claim the exhaust you bought as suitable for fitting to a USA market '280Z'. They market that system (the system you bought - not the latest system that is the subject of this thread) as fitting Japanese market cars. I don't care what 'Whitehead Performance', 'RHD Japan' or any other re-seller claims, Fujitsubo themselves do not claim the system fits a car with an R200 differential. That's the key point here.

Take that up with the "suppliers" then. Personally I'd rather converse with the designer/manufacturer/brand owner to make sure I'm buying the right part in the first place, and I'd reach out in the Japanese language if that was necessary. Presumably if you get an enquiry from Japan regarding your exhausts, you'll answer it promptly and fully in Japanese? You'll need to be able to tell them that your exhausts are not JASMA certificated, you are not a JASMA licensed manufacturer and that using your exhausts on Japanese roads is illegal.

Also recommended: Close one eye and stand on one leg whilst rubbing your head clockwise and your belly anticlockwise. I tried squinting at your S30 and S130 'Z' images, but still don't recognise them.

I'm curious as to why you purchased a Fujitsubo exhaust system in the first place? Who told you it would fit a 1975 280Z without needing to be modified?

As mentioned, the material is FRP (Fibre Reinforced Plastic - AKA 'Fibreglass'). There are occasional private re-pops of these items by specialists in Japan, but few and far between. 'Revive Jalopy' in Saitama makes them to order (no stock held, I believe) but might need a minimum order to start a new batch. They are 'reassuringly expensive' too...

Hopefully Kats won't mind me answering that question. I think you're getting mixed up between the PS30 Fairlady Z432 and the PS30-SB Fairlady Z432-R. It was only the 432-R which had the full-length, FRP 'under cover':

Don't think it was built to be a beauty contest entrant. Goes 'quite well':

So why write it under a comment about Spirit Garage...?

Spirit Garage have a long history in business and are well known and respected in Japan. I can personally vouch for them, having visited in person (to a friendly and generous welcome) and having used a Spirit Garage stainless exhaust system on one of my cars. I also got a thorough conducted tour and talk-through of this rather indiscreet car, which was built - and is usually driven by - Spirit Garage owner Itagaki san...

You see the bits that say "FOR CROSS FLOW" and "When using a cross-flow type of cylinder head...."? The 14004-N3120 MANIFOLD-EXHAUST is for the 'LY'/'Cross-flow' cylinder head. It was a Nissan Sports/Race Option part. It only fits the 'LY' 'head. Just as with the normal L-gata exhaust manifolds, the true 'Works' exhaust manifolds for the 'LY' heads were quite different from the 'Sports/Race Option' parts. Here's an example of a proper Works race exhaust manifold for an LY Crossflow engined Z: ....as you can see, it differs in shape and construction from the 14004-N3120 in the Sports/Race Option catalogue. That's the difference between 'Works' and 'Sports/Race Option'.

You don't need to avoid them completely. Just use them correctly...

Kats, Love, love, LOVE the 'Serusman-yo Setsumeisho' booklet! Super rare survivor there. Fabulous! I believe they made pocket-size information booklets too (for home-visiting, workplace-visiting salesmen - probably on bicycles! - to carry with them for quick reference when customers asked difficult questions...) and I have a Nissan Prince Automobile Sales one for the 1973 range. It's about the size of a smartphone, but has 70+ pages of data. Have you seen one that covers the S30 series cars? I believe the handbrake/e-brake lever seen on some of the pre-production cars was a C10-series Skyline item. It looks almost exactly the same. Like Gavin, I was always told the rear bumper end rubber 'sandwich' pieces were to stop pedestrians, cyclists and motorcyclists from being 'hooked' by a close passing Z car...?

Kats, I have an original set of prints from that sequence, and they came from Datsun Netherlands. Clearly a canal/kanaal in the background too. Dutch and Portuguese licence plates look very similar.