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makes sence to me...
So I think to make it easiest Im going to run the colorado/canyon clutch with a toyota disk.
What about a throttle body?
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Brien.
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milnersXcoupe
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Do I get a peddle from the trailblazer too, or can it be converted to cable pull?
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Brien.
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milnersXcoupe
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Brien.
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milnersXcoupe
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Originally posted by milnersXcoupe: Cajun, ........... don't mess with perfection.
When you go to get the DOHC VVT I-6 LL8 4200, try www.car-parts.com for starters.
Pick the year - 2006 has MAF - find the yard that has it for the '*Nice Price* - contact them, and tell them this is for a Project, and you need everything - Alternator - Wire Harness - ECM - Acc. Pedal and attatchments with nuts / bolts / screws / flat washers in Baggies - you can figure out what goes where later, and ask for the price.
Get everything you can STOCK the first shot - and forget 'Customizing' - get all the parts from the Donor to transfer to your Vehicle : STOCK .
As to a flywheel - the lighter flywheel will spin up the engine quicker - better 'Blip Factor' .
Once it is in - you can then think about Turbos - or 'locked camshafts' or custom ECMs - or Carbs & Cables - but...:
You want this as Stock as possible to get the transfer over with & THEN you can see what you have.
IF you want to Turbo the engine before installing it > and have the Time and Money > contact GM and find which 2MM shorter Forged Con. Rods they used for the Turbo 4200. I believe I read that they used ROSS pistons. Use Turbo Wrist Pins with Teflon Buttons to avoid having the spring clips break or pop out > freaky but it does happen.
Venolia is another source for Turbo Pistons.
For a Stick Trans engine - lighter is better as to Pistons and Venolia is the best.
While the engine is apart > have the clutch / pressure plate / flywheel / crankshaft / rods / pistons Kpl. / front pully & balancer :
=Dynamicly Balanced=.
Running 9 to 1 pistons will allow you to use higher boost > plan on a custom Intercooler, do research on production intercoolers to save money, FORD POWERSTROKE comes to mind, but lurk on jyturbo@yahoogroups.com for more info.
Keep the VVT, as the ECM will adjust the cams to match the boost - you don't want to defeat the engines engineering.
The 2006 engine is 290HP stock.
Putting 6lbs. Boost on it will put you close to 375 / 390 HP with STOCK internals.
Since you want to use a Standard Transmission, each time you lift from the gas, you'll lose Boost and the Turbo will spool down - you don't want a Turbo Engine for a Stick Trans.
A belt Driven Supercharger would be much better for your application as when you kick the RPM back up to match your Gear > you'll have Boost 'Right Now' - since the blower is tied to the crank.
Whipple is one company that uses the 'Auto-Rotor' Screw Type supercharger - which is what I recommend you find a way to get mounted and installed on a 2006 LL8 backed by a Stick Trans.
Auto-Rotor is Swedish or Swiss - do a Google.com search, be prepared to hunt as the Company Site has moved around - great site - but difficult to find - might be under a secondary name , so be prepared to try all variables.
If you're going 'Blown' > build the engine with the Rods / Pistons / Balance > and shoot for 550 / 600 HP.
That will make it all worth while  so I use the stock throttle body, thats what I needed to know. Im not trying to turbo the motor from the start, gotta have something to look forward to. What flywheel do I use for a manual? I read somewhere in here theres a post with part numbers, but I did a search and found nothing. From what I read the stock one will not work, and one from a colorado canyon will not work either... I dont see how Im going to loose boost during shifts if I have a blow off valve...because everytime I shift the BOV pops, pressure gets release, and when the pressure drops in the intake it closes again and the turbo will still be spool up and boost will be right back...
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can a 2.8/3.5 flywheel be machined to fit the crank of the 4.2, and a starter from a 2.8/3.5 be used? Or is there a flywheel that will work? Everyone is being quiet about the flywheel so does that mean nobody knows or its underwraps?
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I think those questions were answered in the earlier posts?
Have you read all the posts on this engine?
12 port SDS EFI 
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I read through this whole thread...there is a part number listed but its a dead end for me...I tried searching google and gmparts.com and some other website with no luck...
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I found on a buick board that there is a flywheel for the v6 buicks that is 13.5 " across the ring gear and has 161 teeth. It can be had in aluminum as well, so maybe it will work?
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Yes it has a different starter It mounts on the driver side of the block mid way up the block.
Larry/Twisted6 [oooooo]  Adding CFM adds boost  God doesn't like ugly.
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If you guys are looking for a manual flywheel to fit the 4200, go back to page 1 in this forum, scroll down to JERRY's message. He had a handfull of flywheels made from the original GM part number(which is no longer available)It bolts up to the 4200 & uses all the 5 cyl. clutch parts. I bought one & it looks A1!!! I'm also using the Colorado 5 speed trans. Does anyone make a better shifter for this trans(other than stock)?
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OK, I e-mailed Jerry Weigt, the gent that posted the info about the export flywheel. This is the response he sent me (with pics too!).
"Greg: I received a 4.2 flywheel from GM’s beta-test program. I later found that this was an “export only, not available in the U.S. ” item. I had a machine shop make copies in billit steel. It uses the starter ring gear from the Chevy Colorado or GMC Canyon 4 or 5 cylinder with manual transmission. It uses the metric pressure plate from the 5 cylinder and is also drilled for an S.A.E. pressure plate.
If this would work for you, I’d be happy to provide one for the sum of $275 (plus freight and tax, if applicable). I’ve attached a front and back picture.
I would be happy to chat with you. You can contact me at (530) 795-0224 most evenings.
Jerry Weigt
weigts@sbcglobal.net"
Well, there you have it. A source for 4200 flywheels. I can't post pics so if anyone wants a pic, send me a PM.
Greg
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Greg, I emailed him too and got the same thing, I think Im going to grab one. It says to use a starter gear from a colorado/canyon, but I thought the colorado/canyon had a different tooth starter though? Hm, I dunno.
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would I need a special fuel pump since the TB motor is returnless? Or will a regular external EFI pump work?
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Brien.
NEW YORK
milnersXcoupe
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How many folks are in the process of doing a swap?
51 GMC 4.2 turbo
Can't solved today's problems using the same technology/thinking that created them
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12 port SDS EFI
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I'm pretty jazzed on this idea. I like the idea of a nice modern day powerplant moving my 68 Camaro or even my 87 Firebird. This whole thread makes me wanna sink some cash into finding a 4200 and a manual trans rather than building a 350 again.
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Try : www.car-parts.com they've a great selection of 4200 inline s :p available.
Brien.
NEW YORK
milnersXcoupe
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Wow, I see that. I knew there were alot of those trailblazers on the road, but wow. There's also alot of 5 speed canyon trans, but I'm guessing the 2.8 trans and the 3.5 versions are different.
Is there anymore news on engine management?
The dizzy and carbs set ups I've seen look cumbersome, but the EFI sounds hard to crack.
Running on MS&S or Carbs w/Megajolt light would be cool though. I think it'd look sharp and pull good numbers with ITBs. Since I'm not as tech minded to come up with my own system to run it I'll just have to keep my eyes on what happens here and elsewhere.
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Originally posted by soultron:
Is there anymore news on engine management? Yes there is: 1) megasquirt will run the injectors no problem, 2) I have finished designing the brackets and crank trigger wheel to mount the FORD EDIS-6 wasted spark system on the 4200 - this system is real easy to find in the boneyards it came on ford 3.8 and 4.0 V6's in ranger PU's and aerostar minivans. Megasquirt supports the EDIS system in its software so with a little wiring we now have a stand alone iginition system for this engine. The only item that needs to be completed yet is an adapter block/plate to mount a non-drive by wire throttle valve onto the manifold. This block/plate would need to be made also. Once I get the engine installed and running on with MS and the EDIS system I plan on getting the cam advance drive/feedback working - the engine will run without the cam adjustment hooked up, the torque curve will be a little different than factory thats all. So we are free of the GM electronics.
51 GMC 4.2 turbo
Can't solved today's problems using the same technology/thinking that created them
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In the last brazilian 4100 comes a crank trigger and ignition system which is very similar to the Ford EDIS one.
Wasn't it be suitable on that case?
250 and 261
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It might well be, just can't get those parts in Canada.
51 GMC 4.2 turbo
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I am swapping in to a '53 truck
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Anybody running yet with a modified factory ECM ?
I hope I'm no more than a month away. Engine is in, coupled to a Tremec 6 spd and I have an ECM modified by Lyndon at Wester's Garage in Alberta. I've had to modify my own harness as well so I have my fingers crossed there also.
Stay Tuned!
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What did you put it in and did you have to modify the oil pan to make it fit?
51 GMC 4.2 turbo
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It's in a 59 Austin-Healey 100-6 ! I milled the bottom 2 1/2" off the pan, cut the "tunnel" out and plugged the holes and put sheet metal hinged baffles inside to control fore and aft slosh.
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AW C'MON, TROUT!!!! YOU GOTTA SHOW PICTURES, MAN!!!
That may be the most beautiful british roadster of all time...WITH A 4.2 DOHC SIX IT'S GONNA SCREAM!!!
Photos, please.
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I neglected to mention that the motor I'm replacing is a 250 chev I installed in 1969! That was .030 over, crane cam , 1.94-1.60 valves, ported, aluminum flywheel, GM electronic ignition, 4bbl, headers,and until 2004 hooked up to the Healey 4spd w/OD and then switched to athe 6spd.
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PHOTOS GALDARNNIT!!!!!
QUIT TEASING ME YOU BEETCH!!!!
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Originally posted by trout two:
It's in a 59 Austin-Healey 100-6 ! I milled the bottom 2 1/2" off the pan, cut the "tunnel" out and plugged the holes and put sheet metal hinged baffles inside to control fore and aft slosh. Very inerested in your swap. sent you a personal message. PICS PLEASE!!!!
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okay, so heres the problem. I don't know how to move my pictures from the card reader in my scanner to this message board. If someone explains that to me, I'll get you some pics.
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Originally posted by Mean buzzen half dozen A.K.A. Hank:
OHCFbird is. Anyone know how to get ahold of OHCFbird? I tried a PM and email through his profile on here and had no luck.
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just found this link on the hybridz forum thanks.I was wondering if Trout could let us know who made the adaptor and flywheel and what clutch he used? any help would be greatly appreciated.
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Also, how about those headers? Nothing like that available in the US.
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Those are the factory exhaust manifolds.
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Hmm. all the other 4.2 exhaust manifolds that I have seen are 6 into 1.
I was wondering if we could find out the pn's for the front and rear manifolds?
51 GMC 4.2 turbo
Can't solved today's problems using the same technology/thinking that created them
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