inline6

Got the header and the merge collector back from Jet Hot. Looks nice: Now I can put everything back on the engine and get it ready to start. While I had the welding gas and extra materials, I went ahead and made a "bypass" section so I could see how much of a difference the middle muffler/resonator makes in sound volume. Still no Maxima diesel pumps in the country. I couldn't even get a used pump... Tried the Nissan Diesel forum, emailed several salvage yards across the country, tried want ads here on hybridz... no luck. Even though my front engine cover has been modified for a diesel pump, I guess I have no choice but to put a stock water pump on there. Maybe I can get it fired up this weekend. We shall see. Video will be forthcoming!

I've also got one from a truck. Ran it in my Z a while. I upgraded to a R200 LSD of the same ratio. I'm in GA. Let me know if you are still looking for one - I can send pics.

I am excited to hear it run too, but it is going to be a while longer before I can start it. I'm still looking for a maxima diesel water pump. Since that is taking forever, I'll send off the header and the merge collector to get them ceramic coated. Maybe by the time I get them back, I will have the water pump.

Exhaust is basically done now. A few more pics. Going to send off the header and the merge collector for ceramic coating soon - while I continue looking for an LD28 water pump. The header still needs some welding. I'll finish that when I pull it off the motor - now that the rest of the exhaust is completely done: Header to merge collector: A different view of the resonator in the tunnel: It's a tight fit: Then the pipe has to swing back to the slot in the rear crossmember: A good shot of how close the pipe is to the diff 'tang': 6" round muffler fits with room to spare: Nothing specific here, but you can get an idea of what kind of road clearance there will be. Rear diff mount "slot" fit on left side: Again, showing space to diff: Rear diff mount "slot" fit on right side: Resonator to floor/tunnel clearance:

I'm in the Holly Springs area. My Z has been off the road for a couple of years but will hopefully have it fired up again in Jan. Putting the finishing touches on an all new 3" exhaust and still need to locate a diesel water pump for the new motor. Garrett

So, I've been looking at sourcing a pump from Australia... emailing a Jimmy at staparts.co.nz. My stock pump (L28) measures 66 mm from the base to the top of the flange. The pump they list as for LD28 is only 60 mm. Part number on that one cross references to a WPN-062... not a WPN-079. My hypothesis is that the 062 pump differs from the 079 pump in this distance from back to front. I wonder if just swapping out the front flange would make it 66 mm. Those just press on/off...

Nice resource. Thanks for the link.

I ran an F54/E88 (not the early one) combo for several years. I believe compression ratio worked out to about 10:1. I also ran a "Euro" single point distributor. I think my initial advance was 17 degrees. I had the vacuum advance hooked up and it was functional. Full advance was around 36 degrees by something like 3000 RPM. The head had mild port work done (intakes matched to stock intake gasket port diameter and only modified about 1" in from the intake manifold surface). Exhausts were ported only in the transition from the bowl to the port runner - again mildly. I ran the stock cam, stock exhaust valve size and 1 mm larger intakes with L28 valve seats installed... 93 octane was readily available and I had no noticeable knocking... unless I did something like put it in 4th gear at 20 miles per hour and press the gas peddle to the floor. Then I could hear some faint knocking. So, I list all that because maybe one or a combo of those things helped reduce knocking... I don't know. Seems some people have real bad problems with detonation on certain L series heads. I certainly did not and I didn't have to retard the timing or anything either. That engine put down 151 at the rear wheels (with early 4 bolt SU carbs) when I had it dyno'ed about 3 years ago.

Price sounds good to me. What brand and part number is it? Would you post a couple of pics so I can make sure it is the one I need? It seems some of the Maxima Diesel pumps are actually not the right specification - based on info I found on this site. One front and one back should be good - and please put "Zentech" on a sticky note or scrap of paper in one of the pics. Thanks for your help. Garrett

Thanks. Rock Auto and everyone else as far as I can tell.

I'd even consider used at this point. Let me know. Thanks. Garrett

Time for an update on the 3" exhaust. I have been working on it when I have time, fitting it all together. This past weekend I finally got to start welding the stainless stuff together with my little MIG welder. It is difficult to make the welds anything but fugly. The tip isn't welded on yet... I think I like it the way it is (length of it that is), but I'm going to look at it each time I walk by for a few days before I make up my mind. This 6" round Magnaflow fits nicely: Rear hanger isn't supporting the weight of the exhaust at the moment. I purposely located the stainless wire here at the bottom of the pipe going under the diff... in the case the pipe drags on the road at any time, this will act as a "pad" to keep the pipe from getting scraped up. I'm thinking the exhaust will drop about an 1/8th once all the joints are tightened up and I remove the jack stands: Trying to keep the pipe as close to the car as possible... My ugly welds... I tried practicing on some more scrap tonight. 5" muffler located in the driveshaft tunnel: Merge collector fitted as close to the header as I could get it: Lots of pieces necessary here to fit the header to the merge collector: I hope to finish all the welding this week/week end. Now if I could just locate an LD28 water pump, I could get this thing started.

These are all gone. Not at RockAuto, ebay, Partstrain, Auto Parts Warehouse,etc.

I did find one. Thank you for replying though. I appreciate it.

Still looking for one of these. Willing to pay $50 delivered to 30115.

L series head getting CNC'd:

Yeah, it has gone quiet. I've been working on the exhaust for a while now. The Nissan Motorsports header that I bought (1.75" primaries) hit the driver's floor. Evidently, that is a common problem with it. To fix that, I ended up cutting off the collector and using some 1.75" mandrel bent pipe to change the direction a bit. I also shortened these three pipes as they were about an inch longer than the other three. Header mods: Merge collector: 3" stainless pipe: Fitting the exhaust: I hope to finish up the exhaust this weekend. Then it's just a matter of last minute checks before the first fire up...

Check the pic at the link I provided above... I am looking for the all metal transmission crossmember. It goes underneath the transmission and has a rubber isolator between the tranny and it. When you say "pinion", it makes me think you are thinking of a differential crossmember, but I'm really not sure. My car is a series one. Thanks.

I am still in need of one. When I made my last custom exhaust system, I modded mine a bit so I included it with the exhaust when I sold it a couple of weeks ago. Looks like mine is 70-72 specific. Garrett

It's a 12/70... which is a 1971. VIN is HLS3016511. Two bolts screw in vertically to secure it to the body. Thanks. Garrett

Sorry... I wasn't clear. I need the metal mount, not the rubber one. Garrett

Let me know. Thanks. Garrett

Hmmm. Even without the three beers, I don't think I'd follow this without spending a whole lot of time with it. I will say, that my Honda S2000 clearly has a side branch resonator in the factory exhaust. Always wondered why that dead end pipe was there. My theory was it was there to make the two lengths of pipe after the Y the same length... making the tonal quality or pitch of the sound the same for both.

I think all the parts are here. Wondering if this will be enough "muffling"... --- I kinda doubt it. 3" mandrel bends and straight pipe: Mufflers, exhaust tip, band clamps, 3/8" rod (to make hangers), and rubber strap hangers: The Nismo header (1.75" primaries) that needs to be "modified": The "Merge Collector": Once the header has been modified to clear the existing floor, I'll be making some connectors to the dual inlets on the merge collector. The header, fabbed connectors, and merge collector are all made out of mild steel. They will be sent off to be ceramic coated. The rest of the system is stainless.