nickz32

Just got home. Brilliant day. As others have said, stand was fantastic and presented the club brilliantly. Nice to put names to a few faces of people I should have probably met by now, and people I’ve never met before. Also amazing to hear so many people pass buy complement all of the Z’s on the stand.

Look at the Cold start enrichment aswell. Have you got the AFR reading displayed on your laptop? It’ll be worth datalogging a start up procedure and look at your AFR’s. You’ll want to be in the 12’a on cold start

Looks brill. See you all Saturday

Ok, so... 1) you sure that’s fuel that’s leaked out the exhaust and not just condensation tainted with fuel? If that much fuel made it into the exhaust I think you’d have hydrolocked the engine 2) have you checked you timing is set to 15deg BTDC? It’ll struggle to start if it thinks it’s at 15 Deg but actually isn’t. You’ll need a timing light to verify 3) increasing fuel pump priming time won’t effect it actually running. The noise you’re hearing from your pressure reg is due to fuel prime being too long and it’s returning fuel back to the tank. You want to either adjust your post start enrichment, or your main fuel table (which is what I’d do). If you want to bring your laptop to the NEC on Saturday I can show you how to make the adjustments you’ll need 4) you sure that oil line is torqued up correctly? The copper washer should take out any surface corrosion on that joint (because it’s such a soft metal)

Doh, Quoted the wrong post. Here’s a little write up on the OE crank girdle

1. Ian Greenfield 2. Craig Stratton 3. AndrewG 4. Chris300 5. JaiKai 6. t.mogsy 7. Gaz 300 8. Richard Smith 9. kgonzokia 10. Funkysi 11. Joelyp 12. Stephen 13. Bigh 14. GSC 15. 182stevecup 16. Rata2ie 17. Johnyboy 18. Art123 19. Devvny 20. Winnoze 21.Mightysi 22. coopd. 23. Slick Pete. 24. Bones28 25. Jonce 26. Nickz32

H had first dibs on the door glass

Depends what I find when I inspect them. If they behave as they should, I’ll continue with them. If not, I’ll probably looks at Scat or Carrillo

It’s not the bolts, it’s the rods. They’re not putting up enough resistance to cause the bolts to stretch. Whether it’s a forging issue or something else I’m not sure. As for the crank girdle, I’ll see if I can find the few bits I’ve read. I’m fairly sure BDE, EPR and a couple of others have written down their beliefs around the limitations of the OE girdle. I’ll see if I can find the bits I’ve read

Have you got the rear screen at all mate?

Well after a summer of fun on two wheels, time to focus on the Z again. I’ve pretty much decided on what I want to do this time round and what I’m going to do differently. I’m going to stick to the ethos that I had before, in that I want to build an engine that’s capable of way more than I ever plan on achieving. I’m still yet to find out a definitive cause of the bearing failure, so I can only assume that while I triple checked my bearing clearances (using Plastigauge) and found them to be on the “loose” end of the factory guidelines, they simply weren’t wide enough for my application. Given that factory clearances are designed for a circa 300hp engine, where my engine generates double that, it’s a feasible explanation. There’s potentially another couple of contributing factors to premature bearing failure. 1. The Eagle Rods. EP racing posted an interesting series of videos recently around issues with Eagle rods. The long and short of it is that he has now seen more than a few examples of Eagle rods where the specified torque value for the ARP bolts (43lbs/ft) is insufficient to gain the required bolt stretch (0.0050-0.0055in). Sounds negligible. However, the amount of bolts stretch evidences how much clamping pressure the bolt is applying to the rod cap. If the bolt isn’t stretched sufficiently, it’s not holding the rod cap in place causing two potential outcomes. First is that small levels of movement/deflection occurs causing movement in the bearing (so possible bearing-journal contact). Second is the bearing isn’t compressed to form the correct shape, again potentially causing bearing-journal contact. By no means am I saying eagle rods are bad, or they all do this etc. Just that it’s a evidenced problem, and a potential cause of my premature rod bearing failure. The only way for me to check whether this has been an issue, is to completely strip the engine down, again, and inspect the rods and measure the amount of bolt stretch. 2. OE Crank Gurdle It’s seems to be generally accepted that the stock girdle should be upgraded above the 550whp mark (634ish at the crank). This is due to the girdle deforming under higher loads causing bearing-journal contact. Now while I’ve not quite been at those levels, I’m not going to be far off. To address this, I’m going to be installing an EPR billet cap kit (rated to over 1500hp) to make sure nothing moves that’s not mean to move. 3. Lightweight crank pulley I’ve always had a niggle in the back of my mind about solid crank pulleys. Nissan decided that the OE crank pulley should be dampened, yet for the sake of rotational mass, I stuck a lightweight item on. Now while I, and many others, have run lightweight solid crank pulleys with no problems, I reeeeeeeeally don’t want to be doing another bearing set again. So, to minimise any harmonic damage, I’ll be fitting an ATi Super Damper crank pulley this time rounds. Im also going to install an EP Racing extended sump aswell as having my crank and oil pump converted into a High Speed Oiling System to ensure my bearings maintain a nice thick oil cushion for my widened bearing clearances (0.0030). Instead of using Plastigauge I’m going to be as accurate as possible and have everything measured with micrometers and Dial bore gauges. While the engines out, im also going to upgrade the steering rack bushings to Whiteline items aswell as replace my AC condenser and straighten out my radiator support (to resolve my less than perfect bonnet shut gap) I’m hoping to get the block into Roland Alsop before Christmas and my crank off to EP racing in the next week or so..... and having seen some of his head work on a set of 48p heads, I’m very tempted to send my 48p’s off to him for some work aswell.... depends how much overtime I can smash in the coming months. I’m aiming to get the car driveable again for May time, but I’m not going to stress over it if I can’t.

Scalpel?

Hmmm. I wonder how common this is with auto converted cars?

How’d you get on Lee

I’m looking at coming up on the bike on the Saturday

Spa classic has been on my bucket list for a long time now.... I’d be interested

The condition of the brake fluid also has a huge impact on pedal effort. Most dot 4 is meant to be flushed every 2 years.... dot 5.1 is more regular than that as it tends to be more hygroscopic that dot 4.

If my car was running I’d genuinely be up for this.... although I’d ask for the stipulation of a handful of laps to better learn the circuit

A few more...... not a bad turn out for a South Central meet!

I seem to remember that he had an old minature cannon.... and got a bit ambitious with the amount of black powder he used.... that was the end result

Yeah I remember that.... and the visit by the boys in blue afterwards! You can see my car towards the back. Sussex Stu aka shrapnel Stu was there.... can’t remember who else but I’ve got some pics somewhere

That was a blinder

I’m happy to put my name down for this

Sounds like a good idea