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3.0L (gives thicker walls than 3.1L which I'd prefer since this will be a high-boost application) - before an item is a specification + before an item is something that will be done to it. N42 Block . + Hot Tanked & cleaned + Bored .080 over (2mm) Crower Custom Rods - Full Floating Slip Fit - Wrist Pin Diameter: 22mm - Rod length: 135mm + Magnafluxed LD28 Crankshaft + Magnafluxed + Micropolished + Balanced (I believe that's applicable) J&E Custom Forged Pistons - I need specs, and don't know exactly how to get them. Camshaft - undecided (Something other than stock, perhaps custom) P90 Head + Lonewolf Stage III Port & Polish (or BMC Stage II) + 5 angle valve grind 1MM Steel Head Gasket PALLNET 60MM Throttle Body Kit PALLNET Custom Fuel Rail - Still don't know which one MegaSquirt and Spark Standalone Fuel Management System After the block is bored out .080 over I believe the cylinder wall thickness will be .370" (assuming it's a .450" cylinder thickness). I'm hoping compression will be around 8.0:1 to 8.6:1 when I'm done. And to top it all off an EVRT Turbocharger rated up to 550HP, or the larger one which is rated somewhere higher than that...(that was a secret, but it was guessed over a zcar -- so the "cats out of the bag", so to speak) Boost at idle...heh So basically, I'd like help in figuring out what pistons I'd need, etc. Show the math and details if you can -- I'd like to learn as I go. Thanks.

what's your e-mail addy? I'll send you the electrical part of the FSM for the '82 280zx

http://www.atlanticz.ca/zclub/techtips/electrical.htm I'll see if I have a ZXT diagram when I get home from work (est time: 3 hours)

I'm pretty new to this megasquirt stuff, but willing to learn. I'll be using this in a 280z with a ZXT engine. I'm going to purchase a preassembled kit Probably from: http://www.rs-autosport.com/ This website states: Choose "Hall/opto" if you're using a Hall sensor as a trigger or if you're triggering off of a switched ground lead on a coil. Choose VR if you're triggering off of a VR sensor, such as the one in a GM distributor. I'm not sure which one I'd choose -- I know I'd be using an upgraded ignition system, and I know I'll be running alot of boost. Any advice? & Yes, I intend on reading all the documentation later tonight, I'm currently at work, on break and don't have time too just this second

I'm driving my thunderbird with bad seals... eats about a quart or so every 500 miles..haven't had any related problems.

I believe the P90 head is for the turbo engines and also promotes better airflow but you should get some other opinions with hard facts

check for the usual rust spots, otherwise it looks great.

quick question for anyone who has done this before, is the bore for the pistons .040 over or .120? edit: nevermind, did the math -- stock bore is 86mm, and bored 3mm over for 89mm pistons(which is .120 over) giving me a 3.1L stroker I believe.

thanks for the input Bryan, I'm still waiting for a quote and additional information on those rods.

Then crower rods it is Is 175$ shipped a good price for an LD28 crank? and my other debate is pistons... I'll use the N42 block as 1 fast z has suggested...

Crower 4340 steel billet rods run $167 per rod ... I Like it, now to find the specifications... I love the prices at Crower, best I've found... but how good are they?

Looks good, I just spoke with Carrillo, they want $291.00 per rod... I suppose I'll speak with Crower about rods.

thanks for the input Tony, I sent you an e-mail with the plans, but don't let them slip out please, only you and 1 fast z have them so far.

Thanks for the input thehelix112, so to the "knowledgable chaps" how short you can make the skirts before the gudgeon pins get ripped out of the piston, and how short a pin height you can go? all the in name of weight reduction...

so what would you charge to lighten the pistons I'll have made? Could you also e-mail/PM(preferred) me with the specs of the pistons I should get custom made for this application, I can send them along with the head for the work. -- What can you do to lighten stock 240z rods(is that even a good/safe idea?) Thanks again.

That works out great, I've got a 76' N42 block 1 fast Z, do you think it would be worth it to have my pistons lightened?

Bryan, Thanks for the input, I feel bad because most of the time I've spoken with you I thought your name was Blake... lol. I've got an N42 block coming, so Would you advise getting custom forged pistons with the same specs as the 240sx pistons(flat top?)? how would you suggest I achieve the 020-.025" piston-to-head clearance? include the math if you can. According to a source of Tony D the stock 240z rods are good up to 600hp... You being one of the few that know the whole plan, do you think they would withstand it? I've got a P90 head and I'll prolly get ahold of you later on to port & polish it, but shipping is going to kill me. I also need to get a good condition LD28 crankshaft... I sent you a message about the cam. Anyone else?

I've been thinking about what to do with my new Z I've come to the conclusion that I'll be doing a 3.1L low-compression stroker leaving plenty of room for high boost... I've actually got a pretty radical plan, but I'm not going to spill a drop of it until I actually see the stroker come together... I've noticed that the size of the KA24E pistons is between 89.5mm - 90mm, the stock bore for the L28 is 86mm, I've also read that anything more than 3mm is dangerous and not recommended. Standard 89.5mm piston: http://www.courtesyparts.com/Merchant2/merchant.mvc?Screen=PROD&Product_Code=12010-00001&Category_Code= Standard 90mm piston: http://www.courtesyparts.com/Merchant2/merchant.mvc?Screen=PROD&Product_Code=12010-00002&Category_Code= Race 90mm Piston: http://www.courtesyparts.com/Merchant2/merchant.mvc?Screen=PROD&Product_Code=12010-00003&Category_Code= *The Race 90mm Pistons require Carrillo steel connecting rods I don't see the 89mm pistons, these seem to be larger... * It looks like the 89mm pistons were only on the 1989 - 1990 240SX. Any Advice on what would be best for this sort of build? Wish me luck, and this is the plan so far: Block: F54 Head: P90 Bore: ??? Crankshaft: LD28 Rods: L24 (Carrillo?) Piston: KA24E Flat-top (or J&E?) Cam: That's a secret! Compression Goal is 8:1 Please let me know is anything I'm overlooking or perhaps something else I should take into consideration ... or anything related at all to this. I'll be using a modified version of Megasquirt running with three profiles for fuel consumption & performance Econo (1 - 6 psi boost (93 Octane)) Street (7 - 13 psi boost (93 Octane)) Race (14 - 20+ psi boost (Race Fuel)) Those boost levels arn't set in stone yet, so they'll vary but you get the idea. If you've got suggestions on what I should use that's different from what's listed above please list them. Price & Time isn't that big of a deal -- I'll have roughly 600$ a month. Thanks, Chad

Does anyone know Michael Soperak? -- he lives in SWFL, has a 240z with a chevy in it.. I lost his number and I need to get ahold of him asap.. this is a far shot -- Thanks -Chad