lamb_daiquiri - Thanks for clarifying mate. I knew there was a reason turbo came first. I actually looked for Positive Displacement chargers that have their own runners, but seeing as how a lot of people are suggesting a put a cooler after the blower too, I'm lloking into ways to turn the plenum into a charge cooler. =) pretty brilliant thinking about it

Jmac - The direction you're speaking of is what I'd consider Stage 3. =P
See, at the moment I'm building a multi-purpose machine, based around mountain sprints, drivable on streets (if barely), with the occasional drag day where I could just change some suspension settings. I plan on building the engine around 102 octane as its sold damn-near everywhere around here and its not much more expensive than street fuel....well not anymore.

If I do go stage 3, I'd go methanol or propane, simply because its common and well-understood around here. But it would simply be for drags for obvious reasons.

I wouldn't waste money on a Jatco box. There aren't that many different Jatco auto's. My RB30 tore through 2 4N71E's and it only has 512nm. ...Not that I'd get that much from an A-Series =P
I'd rather just call the guys from PPgearboxes in Aus and have something concocted.

Currently looking into Quaife sequential dog box...Damn I am one poor bastard according to their standard...

The former golf had a setup with the blower first too. Hmmm kinda confusing. Older guys swear on putting the turbo first because the turbo can't handle the volume as well as the blower can hadle the pressure from the turbo, and you need a lot of bypass work if you put the blower first.

Also thinking of using the blower as the plenum for the sake of space (kinda like mosr pd charger kits. So can't use a charge cooler between the blower and the head, but I can mount a larger intercooler up front.

Rear mount turbo would also work in this case cause of the blower being closer...donno....
Any thoughts? Or am I scratching where I shouldn't? =P

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^^^^THIS - This is why I started this thread. My first post in this thread indicated I just wanted to get pick the Datsun 1200.com Guys' brains. Initially I just wanted to speculate. Just for $hits & Giggles. To confirm if it has been done.

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Now I have to no matter how long it takes or much I end up paying. ;)


I do most of the fabrication bits myself. But I buy the primary block, sub-asssembly, kits and bits for the same reason guys who race fuelers do. You're going to struggle to convince me they dont have the means to build their own engines out of blank steel. I can make hundreds of CAD's, but I still work for a living and dont have as much time during my day to do everything. I mean, if I were to cast my own block and head up to my own spec, of course it could end up making that power. I'm siply doing what every other guy out there does when he buys a bolt-on kit for his car. I'm just buying a few kits =P

I've built more than one 120hp A14 turbo from junkyard crap for buggies. Blew more than one head off as a 16 year-old. It was no biggie as I didnt pay for anything. Now I have a "solid" salary, and I'd like to put some thought and pride into it, even if it has been 8 years since my last A-Series build from ground up. So IF i do blow the head off or put a con' rod through the block sidewall again, I'll investigate what needed strengthening and work on it until i get enough reliability to classify any remaining damage as simple accelerated engine wear =)

I appreciate your input D =) Good questions

We've invented the wheel since then and started slicing bread. Google a few Aussie and South African "enthusiast" cars like Hannes Minnaar's 'Rolla or Luis Lima's Blue Bakkie. 400killerwatt 1.6l's are common on the streets here. Just haven't seen it happen to an A15 yet

The engineer who did the mod is over in England. Will look for pics and post em up. I recall the engineer saying he cut the old bell-housing OFF and made a new one. Might be going nuts here. it was just over 9 years ago. The muppet hasn't been answering my mails for ages. The gearbox ran beautifully with 4.11 Diff. We never used 6th much though.

Only problems I had was coarse shifting between 3rd and 5th at higher rpms. In the city I never felt the difference. Was beautiful match with the A14. It wasn't that much stronger than stock A14. Had top-fed Nikki carb, moderate cam cut specifically for the motor, 12.2:1 Comp ratio, and some balancing, 57mm free-flow and few other little things. Was one of those "build as you earn" projects. GAVE IT AWAY - the noob I was....damn if I could go back and smack myself...

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^^ Can Vouch for this. Silvia box loved my N/A A14. Started giving problems at 6400-6800rpm between 3rd-5th

Totally forgot about R30A Box =D Thanks DD

Been looking into tranny's for 300-500nm. Most standard gearboxes get negative comments when it comes to abuse. Seems I need a more race-orientated gearbox according to quite a few forums. Funny 'cause I've seen local 1000hp cars launch season after season on the same W58 and V160 boxes.

Anyone of you guys seen a production box good for 500hp abuse? Or do I need to look into something like the rebuilt Nismo S15 6-speed or Sadev?

Question is, will that little block handle it? Sub-Assemblies aren't impossible to come by, but A14 blocks are fast becoming a rarity around here as everyone wants them and everyone keeps breaking them (Guilty). Boost is still beyond me. Guys at Eaton don't quite get the idea of having a turbo push air into one of their chargers, so they seem a bit skeptical about assisting me. If I could just get some of these individual companies to put their heads together...

I noted the EGI has 2 little throttle butterflies instead of one large butterfly. According to one or two throttle calculators, max throttle size shouldn't exceed 55mm if I plan to do traffic, but no where do i find a calculator that takes the fact that there's boost from idle into consideration. hmmm...

Oh, and I checked NISMO's site for Sylvia boxes....Wonder if have the right website.
http://www.nismo.co.jp/en/products/competition/mission/silvia.html

Can those prices be in Dollars??

Before and After - My rebuilt A15 just before I sent Lucy off to the Body Shop. Took her for a test run and she ate her first Opel OPC that day...good times =)
Good Starting Point for 500hp right?

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I'm not sure if all Bakkies came with H89 heads. Our bakkies all came with A14's far's I remember. The A15's were all import motors. And A15 heads vary wildly. I've had 2 A15 heads, both tiny round-port, without the H-something stamp on them.

The head in the above pics came off my own A15 that I took off when I had another ported. Built the motor first, tried it, and had the body sent for sandblasting and respray since. Motor on the bench has been rebuilt a few times. =P