Mission Creep sets in Deeper now
As I've decided to put the roll out back to July 2017 I'm saving for more stuff. Next item to be added to the shopping list is a belt driven vacuum pump system.
The list is growing again for sure.
I'm not sure if I mentioned this before! But I'm considering investing in having the engine tuned on an engine dyno before it goes into the MGB.
I will have to trial fit the new engine so I can work out where the new engine mounts need to be on the chassis but then it can come out and be finished ready to fire up. I am making enquiries now about how much it would cost to be bedded in and then tuned on a dyno. I guess as its got a mechanical roller cam there wont be much required to bed the cam in like I used to do with my old hydraulic cams? But the rings will need settling in, and doing this under some load would be best I think.
I have no doubt that I could build the engine and guess at a reasonable tune on the twin carbs but that will mean lots of test passes on track and then looking at data logs to make minor adjustments and then queue up to run again etc etc.. This could take several weeks of track testing at RWYB events where I may get 2-4 runs in a day eh? And that before I even think about turning the gas on to test all over again. So I'm thinking 4-5 days at the track for tuning runs off gas will cost me around £400 ish when I could be working overtime on those weekend days and earning around £800 ish? I think that makes it a no brainer to be honest?
The block is now part built and despite the Dart specs saying that the block will clear a 383 stroker kit (as it has been cast with cut out where required) I've used bigger con rods with an ARP upgrade kit so I need to take around 2-3mm out of the block here and there to prevent the con rods fouling. So far it looks like the low base circle cam will clear the crank and rods
While all this is going on over the next 10 months or so I need to do a lot of other work on the car and make my mind up about how I am going to build the new nitrous system? I dont intend to ditch FRED as he's been good for me so far. I'm thinking that I will stick with crossfire plates as I like them. Direct port would be good as my inlet manifold has lots of room to fit nozzles but I dont want that much plumbing on the engine. I do however want the nitrous system to be able to deliver around 500hp if I should want to, so I may invest in new pulsoids. One pair for each carb rated at 250hp. I'm sue the plans will change as the rest of this year moves on. But at least I have a basic plan in place