Hey all! I'm finally done. Thats what I tell myself at least. I know exactly what the goal is for my car and have even started ordering parts Just little general things but on order is, a set of 3.55:1 Richmond Gears, a 28 spline mini spool with a moly pin, a wastegate that should come with springs for 6, 12, 18 psi, four hood pins, I got a sweet deal on a fuel regulator, and a blow off valve. I wanna build this car the right way! Doing a full tear down, lightening it (Im still looking for the dry ice ), getting it all pretty, then building it from the rear end forward so it can handle the power. The rear end is pretty easy but... and please bear with me as I have registered to a turbo inline 6 forum but the admin who finalizes it hasnt done so yet. 1) What would you suggest to increase the shift point on the C4? I have found information about a governor change but cannot source the part. 2) Shift Kits, yay or nay? Trans go? 3) How do I boost reference the transmission so my shifts dont suck ass? I know having to let off then go back on for shifting will burn my clutches up fast. and for the engine... I have a basic idea in my head... I know I have the better rods than later years as its a 71, I also have seven mains. This, along with people like LINC running 20 PSI on a stock motor with the 1v leads me to believe I should be able to... Use Arp Head Bolts, ported log head with the 2v conversion Running 17* advance +- 10 a FMIC a wideband and 110 Octane gas in a fuel cell and Run some pretty high levels of boost. I know I'm asking alot of questions on this forum but Im the kind of guy who likes to have all his parts and tools together 6 months ahead of the fact. I hope you can bear with me on this. I do alot of research but Ive found that people backing up the idea is never a bad thing. I guess I never got to my engine questions... 1) Who makes a cam for this engine that would allow me to rev this baby up, if transmission and valves allow it. 2) Has anyone actually seen (preferably built) a properly running boosted i6 making more than just 5-6 psi? LINC on fordsix.com helped alot but he had some constraints I dont. He wanted fully stock until later. I just dont want to have to buy pistons if I can help it. He also wanted to avoid N20, I'm not above using a 25 HP shot the whole way through to help cool the air charge...
1. As far as I know the only way to raise shift points in drive is to replace the governed. If you get a quality shift kit it should allow you to hold the gear you want. 2. I have a performance auto shift kit, it works well but would rather have a manual valve body. 3. You'll need a bypassed check valve for the vacuum modulator ( can't remember the name for it), got mine from Napa for a Buick grand national. If you go manual valve body you won't need this do to no longer having a vacuum modulator. You may want to run meth injection to cool air charges instead on no2. It's probably cheaper but haven't really looked in to it. You can get away with stock cast pistons, but make sure you tune is spot on and your air charge is cool, cause cast pistons are not very forgiving when it comes to detonation.
Alright so, my two options for the transmission is a manual valve body (Which seems like it would be cumbersome with my shifter on the column) or a Shift Kit with a bypassed check valve. Considering the price difference I think I know which One Ill be going with. As for the n20 vs meth. Meth is no doubt cheaper but I already have a bunch of spare n2o parts at my disposal (as well as the parts on my chrysler I could salvage). Plus n20 gives me the option of dialing down the boost and trying out different jets until I get a nice flat torque corve. Ill definitely be watching the tune and going so anti-detonation it'll be crazy at first. I saw a guys motor after he went lean and .... yeah. I have a standby motor but I dont Want to have to do an engine swap. I was gonna skimp on the Inter cooler but then I realized a junkyard nearby had a few diesels and eclipses.
I think clipse intercooler will be to small, its about 8x8 and 1" thick, it'd probably do more harm then good. I'm assuming this going to be a blow through? You will probably have pretty good IAT's just by blowing through the carb and nitrous.
Never worked on an eclipse so thats good to know! ANd Pretty good will never be good enough Plus what If I want to go have fun but dont have any Spray? Im over thinking this all of course but tis the curse of an engineer.
You MUST keep cylinder pressures in mind when it comes to using cast pistons. So, just because someone else is running cast pistons with 20 PSI of boost.. which IMO, is downright silly if you give a crap about your motor and physical safety(ever have oil under your tires at over 100mph before?).. doesn't mean squat when comparing to another motor making more cylinder pressure at only 12 lbs of boost. Induction mod's (cylinder head, intake, carb) and exhaust system design will compound pressure rise.. and detonation potential.. when paired up with an efficient cam. And with that kind of boost.. a custom cam would be money well spent. TBH though.. a crappy off shelf N/A cam will likely help the motor live much longer since it will never be as efficient and produce anywhere near the cylinder pressures that a custom blower grind would. Basically amounting to an internal boost controller. lol I know I'd sure as hell be stuffing in the biggest exhaust valve that head would allow.. even at the expense of intake valve size increases since that'll be the weakest link for that heads valving. My money is on ring land failure if you want to push the laws of thermodynamics when it comes to cast aluminum. Sure some have done it just to see if they can.. and say they have.. but NONE trying to build really powerful motors(ie; big boost AND high cylinder pressures) usually venture down that gamblers path. Just too much to lose in the end. IMO, you'd be much better off with less boost on a bigger motor at lower rpm's. A lot eaiser on parts too. PS. this guy knows his stuff. http://mmb.maverick.to/showthread.php?t=29643 I personally love the Fairbanks stuff and Transgo has been solid for many years too. I usually stay away from anything B&M related. And I usually always buy my stuff direct from Transtar these days too.
Not trying to cut corners, Im making sure the only thing that can break, or at least will break at this power level is the stuff inside the engine. for two reasons: I can fix anyhing outside the enigne, and I have never done engine internals... well I did work with little 2 cylinders but that hardly comparres to properly building a cars engine. Id buy the pistons in a heart beat if I had the slightest clue howto prep the block and put them in (PROPERLY), but in a high mileage 200 ci, Im pretty sure its not worth it. As I said, maybe not in this thread but at some point.. I have a healthy 302 in a torino I can throw in if/when this engine goes boom. Until then I wanna see how far I can push it before it goes pop. The entire car is a learning experience, but I cant learn EVERYTHING as once.
lol.. a high mileage 200 won't even make it past the tune up/dial in stage when running rediculaous amounts of boost that you're talking about here. No joke. IMO, you better have 2 motors ready for a build like that one. One to hook up all the parts to and blow up shortly after.. and another to actually get a few miles out of before blowing it up again. Not to mention that the blowby will be absolutely horrible not even counting the oil leaks you'll have. Not trying to rain on your parade here.. but that's an exercise in futility and complete waste of time and money.
Maybe you should consider finding a '87-'88 Turbo Coupe T-Bird and robbing the 2.3 4cyl... Those have forged pistons and stock bottom end can handle 20 psi without grenading it's self... A 5 speed TC at 20 psi(stock was 15) is a lot of fun and a Mav is at least 500-600Lb lighter... Would take some fab to fit it but could be done, main pieces would be front sump oil pan from Pinto or M-II and the motor mounts...
@krazy comet thats not a bad idea @groberts, meh we will see. I already have a baffled catch can (2 actually) It might be an exercise in futility, but thats ok with me People said that when i bought my bike, they said it when i was trying to build a functional air intake for my hemi (showed gains btw), they said i was crazy when i said i had broken something very important that everything on the internet needs. In not looking to break any records here, cars are a passio for me and i KNOW I'll learn a lot things doing this. If i blow up a 200... Not worried. Youre not raining on my parade, youre just not dissuading me either. I spend a lot more money every year learning things that are a lot less fun. There will always be more money, there may not be time later in life to learn what i want to
