Trav’s Race Build: from B6 to Big Bore BP-Z3

Scoota · Postby **Scoota** » Sat Nov 16, 2019 12:36 pm

Thanks everybody!!!

I’m excited, but I’m also completely fried and stressed as hell!!

Progress today...

If all goes well, this little beauty will be installed today!!

Sent from my iPhone using Tapatalk

Scoota · Postby **Scoota** » Sat Nov 16, 2019 1:18 pm

It’s ready to swing into the engine bay!!

Sent from my iPhone using Tapatalk

Scoota · Postby **Scoota** » Sat Nov 16, 2019 2:23 pm

Crap. B6 engine mounts do not bolt onto the BP block. The rubbers are the same, but the pressed steel brackets are not.

I’m off to Robbie’s shed to steal some!!

Sent from my iPhone using Tapatalk

Tim_cyc03 · Postby **Tim_cyc03** » Sat Nov 16, 2019 5:01 pm

Might be to late, or already thought of, but the angle of the outlet for the oil cooler lines. I ended up going around to about 5 o'clock (assuming we say that yours is at 3 o'clock in the picture) to make it all fit nicer.

Obviously this changes with placement of the core etc, but possibly less of a PITA to change now if you had to.

Scoota · Postby **Scoota** » Sat Nov 16, 2019 7:34 pm

Engine mount crisis resolved. Thanks Robbie!!

Sent from my iPhone using Tapatalk

Scoota · Postby **Scoota** » Sat Nov 16, 2019 7:36 pm

Tim_cyc03 wrote:Might be to late, or already thought of, but the angle of the outlet for the oil cooler lines. I ended up going around to about 5 o'clock (assuming we say that yours is at 3 o'clock in the picture) to make it all fit nicer.

Obviously this changes with placement of the core etc, but possibly less of a PITA to change now if you had to.

Thanks Tim, I’ll keep that in mind. I can spin the block relatively easily at the moment, so I’ll play around with pipe routing soon.

Sent from my iPhone using Tapatalk

Scoota · Postby **Scoota** » Sat Nov 16, 2019 7:38 pm

Right now though, I’m having a beer to celebrate a significant milestone...

Sent from my iPhone using Tapatalk

Scoota · Postby **Scoota** » Sun Nov 17, 2019 8:33 am

Another late night, but progress was good except for one issue....

I bought an alloy alternator pulley (from a reputable Australian MX-5 parts dealer), and it’s not going to work. So, I might be off to Robbie’s again today, to steal a factory pulley. If that’s no good I’ll have to visit my dad and jump on the lathe to either modify the pulley or make a bush to get this alloy jobbie aligned with the crank pulley.

In other news, the brake lines are all on and the loom is positioned nicely around the RHS fuse box. Dave is assembling the Mishimoto radiator/shroud/ fans, and I’m mounting up the throttle bodies.

I thought I was going to have to cut a whopping great hole in the bonnet, as the VVT control block on the valve cover sits waaaaay up there. We did a quick Play-Doh test...

Phew!! We have clearance, but only just!!
Secretly, I’m disappointed that I don’t “need” to buy a vented carbon bonnet.

I’ve been waiting for soooooooo long to bolt these on. Aren’t they amazing!!!!!

Sent from my iPhone using Tapatalk

plohl · Postby **plohl** » Sun Nov 17, 2019 9:24 pm

Why did you keep the front thermostat neck?

StanTheMan · Postby **StanTheMan** » Mon Nov 18, 2019 5:54 am

1 your altinator Pulley
Assuming you need to go with the ribbed pulley as opposed to the V belt pulley from the the NA6 right?

The axel from the Ribbed pulley is wider than that of the NA6. Swapping pulley does not work unless it’s dodgy. I’ve read of all types of situations and it brings the pulley out of centres .
The answer is a NA8 altinator. Which has the pulley and is also internally regulated.

Looking at possibly changing some internals on the NB pulley. Unsure if that is possible. Take the regulator from the NA6 & put it into a NB one . Unsure if this is possible. But anyone with automotive electrics should tune in

Sent from my iPhone using Tapatalk

StanTheMan · Postby **StanTheMan** » Mon Nov 18, 2019 6:04 am

HAppy to throw in an NB One for experiments

Sent from my iPhone using Tapatalk

StanTheMan · Postby **StanTheMan** » Mon Nov 18, 2019 6:06 am

Of course there is always a possibility to get a sleeve made up for it.

Sent from my iPhone using Tapatalk

Scoota · Postby **Scoota** » Mon Nov 18, 2019 8:56 am

Hi Folks.

Just quickly, the thermostat neck is still there because I didn’t predict that it could be deleted altogether. I’ve always had the blanking plate on the B6 thermostat housing (as shown), so that was my plan all along. In hindsight, I should have deleted it altogether.

The alternator pulley is sorted. We machined the back of the pulley, the “bore extension” part, to achieve alignment to the other pulleys. Also, the small bush that used to live onboard of the NA pulley was sliced in half on the large and installed as a spacer on the front of the pulley (as a thick washer). Sorted!!

The throttle cable is the nasty issue at the moment. I’m trying to graft a new “knob” onto the cable, but failing. Standby for news on this.

Last night we finished installing the fuel rail, for injectors, fuel lines, fuel pressure sensor and whatnot. We all stood back, fire extinguishers at the ready, and flicked the key on. No leaks!!! We even had a meaningful display of fuel pressure on the amazing new digital display, which had been successfully powered up. My legendary mate Dave got it talking to the ECU and did a heap of wiring diagnostics and work. Thanks Dave!!!

This makes me happy...

Im working on the loom again (still!!), connecting sensors. Oil pressure line will be next, then maybe coolant lines, after I throw these in...

Back to the shed!!

Sent from my iPhone using Tapatalk

plohl · Postby **plohl** » Mon Nov 18, 2019 12:48 pm

Scoota wrote:Hi Folks.

Just quickly, the thermostat neck is still there because I didn’t predict that it could be deleted altogether. I’ve always had the blanking plate on the B6 thermostat housing (as shown), so that was my plan all along. In hindsight, I should have deleted it altogether.

Ok. Yeah, the whole thing can be removed, and a welsh plug used in the head. A lot neater.

What are you doing re oil cooling?

Tim_cyc03 · Postby **Tim_cyc03** » Mon Nov 18, 2019 6:06 pm

I would dare say that you probably don't need those fans on the radiator if this is a track only car.

I use to have a mishimoto radiator, probably the exact same model you have there, with a single fan, and a few other slight modifications... I then took the relay out for the fan without realising and it didn't make a difference. Of course this just means in the pits you turn it off instead of sitting there idling...