Inliners International Forums General Discussion Blown and Injected 250 Turbo I6

Well im new here to this site, i figured i would post a ongoing project of mine. I have been collecting the parts for the past couple of years and i hope to have it running before the end of this year. I still have some parts in the process of being aquired. Here are the specs, ill post a few pictures later.

Chevy Inline Six Build Up-TURBO

Engine: 250 I6 Chevy o Ringed
Block Details:
Bore: .060 over
Bore: 3.935
Stroke: 3.530
Compression: 8.5:1
CID: 258
Camshaft: Crower
Cam # E-68061

Duration- Intake: 286 degrees Lift: .679 Clearance: .026
Exhaust: 280 degrees Lift: .655 Clearance: .028
Lobe Separation: 114 degrees
Duration@ .50 IN: 254 degrees Lobe Lift: IN: .388
EXH: 247 degrees EXH: .374
Water pump- GMB North America
GMB-130-101P
Thermostat: EMP-300-160 degrees by STEWART
Housing: CSR Aluminum
Rockers: Crower Enduro Roller 1.75 ratio 3/8”
Lifters: Comp Cams roller lifters
Lifter covers: PES Aluminum covers
Springs: Crower: open 600 lb
Close 220 lb
Retainers: Titanium- with the head
Head: 73CC Gm Head Lump Port- Mr hotrod 6- in process of acquiring now
Head Gasket: SCE Pro Copper gasket with o rings
Valves: Stainless steel INT: 1.940
Inchonel EXH: 1.600
Connecting Rods: SCAT- SCA-66000206a 4340 h beam 12 point cap 6.000” in length
Pistons: Ross? CP? Je?
Crankshaft: Stock
Oil Pump: M-62HV High Volume melling
Oil Pan: Track pan made from steel
Oil pain studs: Stainless Steel ARP
Head Studs: ARP Studs
Main Cap kit: ARP
Intake: Clifford Aluminum 4 barrel
Carburetor: C and P Custom Billet aerosol blow thru carb- In process
Turbo Manifold: Custom Welded manifold
Turbo: T3 AR70 with 84 AR turbine
Wastegate: 16lb race products
BOV: 53mm Billet type
Distributor: MSD 8515 magnetic
Ignition: MSD 6ALBTM
Valve Cover: Sissell sheet metal- aluminum
Stud girdle: Mr Hotrod 6- in process with head
Gaskets: Fel Pro
Bearings: not yet determined
Timing cover: MR hotrod Aluminum 3 piece
Timing Gear: Adjustable machined timing gear
Fuel Pump: Aeromotive SS Electric will be upgraded to A1000
Fuel Regulator: Aeromotive 13301 boost reference regulator
Fuel block off plate: Aluminum
Oil system adapters: Hamburger

Damper: Inovators West internally balanced
Flywheel: Reactor Wheel - Neutral Balance 168 Tooth
Transmission: outlaw 700R4?
Torque converter: ?

welcome, nice to see you posting on our site.

so far you have a nice group of parts added up.
here is a few questions and comments.
what car is this going into? i think i know , but just to let everyone else too.
that is a pretty big cam to be mixing with a 700r4. 1st , i do not think it will take the power and second the O/D will hate the cam. my suggestion would be a th350 and a bolt on O/D if you want O/D.
also, what rear and ratio? tom

Tlowe...


I have had a lot of people mention that...which i respect and have taken into great thought..... another builder has recomended a 200 r4 which can handle the power which i am seeking right now, i will let you know the specs and all as soon as i have conformation.......it is supposed to be the best thing since sliced bread but i do not belive the hype....will let you know asap

sorry i forgot to add the most important part of what the engine is going into.

1967 chevy nova 4 door

i have completely upgrade the suspension to what a stock 4 door can hold....cpp mini sub frame...church boys rack and pinion....qa1 coil over shocks....global west subframe connectors and del-alum ahackle kit.....upgraded 10 bolt...qa1 shocks in the rear...

my goal is to present a stock looking car other than the rims and dust the competators....we will see....

if not i have a pro stock ready 67 nova wagon made to a 2 door and choped 4 inches to compete with this...

sorry im slow tonight i need to read more...4:10s in the rear

ah, 4.10's, the o/d will like that alittle better. it will help get the cam out of the low rpm overlap. i also agree that a 200r4 will give better ratio's. the only place i'd buy one from is the real art karr (sp). somebody bought his old bussiness and i would not buy from them. tom

turbo nova,

I would like to know what your goal is as far as HP,1/4 mile time & so-on.?
1/4 mile car,top end? daily driver,good street manners.weekend car,strip only,,street/strip,,,etc.. what is more your goals?

Running a big cam will not hurt the 700,if anything, running a big cam will give you less torque at lower RPM's for the most part,, & torque is what kills transmissions,not so much HP.
As far as your turbo exhaust manifold.
A plane log type manifold will work just fine.

Look at this guys stock modified manifold making a lot of HP.

530 hp@5300 and 588 lbs@4000rpms at the flywheel, with 21psi boost and E85.


https://www.inliners.org/ubbthreads/ubbthreads.php?ubb=showflat&Number=46662&fpart=1

IIRC,,,A guy in Brazil has made 869 HP w/the SPA manifold ,same as yours,, on a 250.

http://www.stevesnovasite.com/forums/showthread.php?t=112302



MBHD

That is my post also at sns here a picture of my manifold i am building who knows how it will work

http://www.stevesnovasite.com/forums/showthread.php?t=112302&page=3

Welcome to the site.Looks like a strong build with all those go fast parts. I was wondering what kind of turbo are you going to run? I see a T3 ar70 turbo in your list ? Any more specs on it?

All I see are red xxxx. Can somebody post the pictures over here.

That is all I see, I cannot open any pics .
Pics here please.

MBHD

Here are a few pictures of my turbo manifold i am building.....its not complete yet and im not to sure if it will have good flow characteristics but im giving it a try...im having custom stanless steel exhaust flanges plasma cut right now so the plate it is welded to is only a mock up. Also a picture of my adjustable timing gear.

Looks impressive.

Is there enought room to complete the welds with it assembled like that?

Is there room for your intake still?

Verneer lock cam gear looks very nice.

Looks nice so far.

I read in your other post, you are only looking to make 400 HP???

If that is the case,this turbo manifold is a bit overkill.

You can make a plane jane log type manifold for 400 HP.

But since you are making a nice manifold & you are probably having fum making it,as I would also,keep it up,you are doing a good job!

B.T.W.,those are stainless schedule tubing,how much have you spent on materials so far?



MBHD

Sorry for the gigantic pictures...i did not know they were that big.....well the manifold so far in materials is close to the 400 dollar mark, that stainless tubing is not cheap. When i go back to tig it up i will take one complete tube off at a time and weld it solid and put it back together. It clears the intake fine im just worrried about car fitment thats why i have not finished it yet. I will keep you posted with smaller pictures this time...

well the turbo i have to say is a cheap one, it was about 350 to 400 bucks oil lubricated. This is more of my experimental turbo i have plans to upgrade to a water cooled one after i work out the engine bugs.

in terms of horsepower i am amming low right now and if it comes out to be more than thats great....i have ran it through the desktop dyno and it has given me some crazy numbers so i will wait and see when its done so i do not clame anything it will not produce.

I saw it on sns...but the thread dies in May.

So how far along is this Turbo-Motor? Have you had it up and running or bench tested it yet?

Still plugging away with some parts here, put the deposit on the head today, the description is as follows....

Custom Stage 4 Turbo Roller Cam head

STAGE FOUR Hot Street Econo; Lump Port Street Head, All included in Stage one, two, and three; with the addition of a performance valve job. and PC seals. 12 High Performance intake and exhaust valves 6 stianless intake and 6 Special alloy Inconel exhaust Valves . Special roller cam springs, Titanium Retainers, ARP special length screw in studs. I will post some pictures when it comes, also i got my stud girlde.

here are a few pictures.

The head and stud girlde are from Mrhotrod6 motorsports







i borrowed a couple of his pictures as my camera is having issues.

Here is an updated spec build sheet with some of my head info on it.

Chevy Inline Six Build Up-TURBO

Engine: 250 I6 Chevy o Ringed
Block Details:
Bore: .060 over
Bore: 3.935
Stroke: 3.530
Compression: 8.5:1
CID: 258
Camshaft: Crower
Cam # E-68061

Duration- Intake: 286 degrees Lift: .679 Clearance: .026
Exhaust: 280 degrees Lift: .655 Clearance: .028
Lobe Separation: 114 degrees
Duration@ .50 IN: 254 degrees Lobe Lift: IN: .388
EXH: 247 degrees EXH: .374
Water pump- GMB North America
GMB-130-101P
Thermostat: EMP-300-160 degrees by STEWART
Housing: CSR Aluminum
Head: 73cc Mrhotrod6 Intake lump Ported Roller Cam prepped Stage 4 Plus head.
ARP 7/16 screw in studs
Mrhotrod6 Custom Super Duty H Beam 7/16 Stud Girdle
Valves: Max upgrade just below Titanium, Pro Series Extreme Duty Race Intake Valves 1.940
-Special Alloy Inconel Exhaust valves 1.600 Plus .100
Rockers: Crower Enduro Roller 1.75 ratio -7/16”
Springs: Roller Cam Valve springs Chrome Silicone Vanadium
Retainers: Titanium- with the head
Lifters: Comp Cams roller lifters
PushRods: ?
Lifter covers: PES Aluminum covers
Head Gasket: SCE Pro Copper gasket with o rings
Connecting Rods: SCAT- SCA-66000206a 4340 h beam 12 point cap 6.000” in length
Pistons: Ross? CP? Je?
Crankshaft: Stock
Oil Pump: M-62HV High Volume melling
Oil Pan: Track pan made from steel
Oil pain studs: Stainless Steel ARP
Head Studs: ARP Studs
Main Cap kit: ARP
Intake: Clifford Aluminum 4 barrel
Carburetor: C&S Custom Billet aerosol blow thru carb- In process
Turbo Manifold: Custom Welded manifold
Turbo: T3 AR70 with 84 AR turbine
Intercooler: Single pass aluminum
Wastegate: 16lb race products
BOV: 53mm Billet type
Distributor: MSD 8515 magnetic
Ignition: MSD 6ALBTM
Valve Cover: Sissell sheet metal- aluminum
Gaskets: Fel Pro
Bearings: not yet determined
Timing cover: MR hotrod Aluminum 3 piece
Timing Gear: Adjustable machined timing gear
Fuel Pump: Aeromotive SS Electric will be upgraded to A2000
Fuel Regulator: Aeromotive 13301 boost reference regulator
Fuel block off plate: Aluminum
Oil system adapters: Hamburger- block adapter with remote filter mount
Damper: Inovators West internally balanced
Flywheel: Reactor Wheel - Neutral Balance 168 Tooth
Transmission: outlaw 700R4?
Torque converter: ?
Oil/fuel Lines: Icor braided Stainless steel lines with Gold style fittings

to the moderator, please delete my oversized pictures as i am unable to edit it, i will repost with proper size pictures.

Turbo nova
I did as you asked. photos of 640x 480 Or smaller is ok for most web site to veiw.And not look way to big. Hope this helps.
Great Job by the way.

Here is a long overdue update for the site: not sure if others have seen my post on other sites...

well here are some updated pictures for you, this is a test fit only i have to take it all back out. i will run all the pipe and intercooler after i rotate the turbo to the correct orientation.

Here is a picture of the MR hotrod 6 head

Well, here it is a few pictures of the head with the rockers and stud girlde on it.

The piston order is going out this week, i should see them again in about 4 weeks. specs as follows

JE pistons
-8cc JE 2618 Alloy Forged Pistons with wrist pins
-Total seal gapless top rings
-High heat ceramic coated crowns and moly coated skirts
-Heavy duty wrist pins
-contact reduction grooves

Saw this same post on stevesnovasite. Can't wait to see what numbers it makes.

Looks very nice!

Great job!

MBHD

I think you are going to make much more power than you are thinking.

I would also recommend the 200-4r unless you already have the 700r4.

I really really want you to put steelies with dog dishes on it. That car will make millions!

Hopefully so,

I have so man other freinds spend lots of money and produce low numbers.

We will see ill keep my fingers crossed.

The whole goal of this car is to remain stock looking on the outside for the "sleeper" approch.

Thanks for the comments

Here are the pictures of my turbo pistons.

I went with diamond pistons over JE because if i have a failure i can purchase just one piston if i want it.

specs:

Special coatings on both the crown and skirt.

Bore: 3.9350
Compression height: 1.365
Effective volume: -5.1cc
Valve depth intake: .177 exhaust .169
double spirolox
piston weight: 543 grams



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i love it keep the pictures and info coming

Man it's like christmas looking at these pictures!

A few more up dates for you

Off to the machine shop:

Basic list of operations to be completed:

1. Drill for Oversized pushrods- need to be 3/8”
2. Damper needs to be recessed onto the crank by cutting a .250” relief in the gear to pull it on to both keyways
3. bore block .060 over with plate( being shipped as we speak)
4. boil block install cam bearings and freeze plugs
5. align hone block
6. surface block
7. balance crankshaft assembly internal
8. size wrist pins to piston
9. polish and mag crankshaft
10. engine assembly (on this one im letting the shop do the first assembly so i can get it properly recordered and checked for any futture issues)
11. o ring the block for my stainless wire- no rings on the head...

I will be sure to get some pictures of the whole process, i will not be dynoing the motor untill later in january/febuary time frame.

It will take a while to get all of the final parts, mocked up/fabbed up after it is built.

Also a new turbo:

I mocked up the new turbo to my cast iron manifold. Its a T4 turbo and a T3 manifold so i had to get and adapter the would move it up a little. The T4 can be adapted directly to it but i still want the option to go back to a T3 if i so choose.

Turbo specs:1.05 A/R

Compressor Size: Inlet = 4 3/16", Inducer = 68.7MM, Exducer = 97.8 MM, Trim = 69,A/R = 0.66, Intake (ID / OD) = 2.25" / 3.25"

Turbine: Outlet = 4", Turbo flange = T4, Downpipe flange = 3.5" V-band, Inducer = 87.4 MM, Exducer = 77 MM,Trim = 92, A/R = 1.05


Its a little big but we will see what it can do when it comes for the dyno day.



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Picture of the mock up T4 turbo


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C&S blow thru carb built for the turbo inline


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Carb hat


the main stud caps have been machined down to allow for the ARP stud gridles to fit.

Also the block has been Bored 60 over.

The crankshaft will be sent to a shop up in tennesee to get ground down



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Looking good!.

I am just thinking the turbo is a bit big also,but try it out & see.


Is your turbine housing devided?
If so,might want to use one of these from my friends shop.

http://www.theboostdepot.com/index.php?p...emart&Itemid=26

Just a thought anyways.
You are getting a lot of nice parts,someday I will buy also.
Keep it going!
One other thing,can you get a stub stack for your carb? Might help w/flow.
Sorta like this: http://www.knfilters.com/Racing/stubstacks.htm

MBHD

Still waiting on the machine shop....i guess they had to send the crank to tennesee to get polished.

Hopefully i will have something usefull to update on this build shortly.

Went by the shop today to check out some progress.

The crankshaft was back from the shop and it looks good.

The the gear has been recessed on the crank to allow the harmonic balancer to pull into place.

The gear has also put onto the camshaft.

The block has been bored, honed and o ringed.

Hopefully it will be finished in a couple of weeks.



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Did you drill & tap the end of the crankshaft?

If not, I would suggest a BBC size damper bolt.


Looks good ,keep it going.

MBHD

The crank has been drilled and taped.


Here are a few more pictures of the build.

Engine assembly has begun, the short block is about finished,

the engine should be buttoned up by the end of the week.

I still have to get it home before i can run it on the dyno.

a little more fab left



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Looking real good.

What ever happened to your weld els turbo manifold?


MBHD

still working on it,

i want to get the engine up and running first and then i will look at finsihing the manifold