Turbo 2v first passes at the dragstrip ends in disaster 

My guess is, head gasket seal was lost. I didn't see you retorque the heads after initial warmup. This used to be a thing in the 70's when using copper head gaskets. Pull'um and see!

Andrew, double check the torque on the studs, I have the same ARP 2k studs, when I torque mines everything was good, then a knowledgeable person (machine shop) told me to loose them and torque them again. Also while you are putting pressure thru the radiator try to turn the engine manually! Maybe the head gasket is seal with no boost but when boost gets in the chamber the cylinder pressure is far more than 20 psi.

Boost pressure probably lifting your head just enough to dump coolant

Like you were saying the 20 psi on the overflow probably doesn't recreate the problem due to heat or actual cylinder pressure. Like some other comments a leak down test is where its at. If you don't have a leak down tool. You can also use a compression tester line hooked to an air source instead of the gauge. Then pump air into each cylinder while on tdc until you see or hear where the air is escaping. Maybe start at 60 psi, lock the engine, or ramp up the air from low as the air can move the piston in a perfectly sealed cylinder. Then you can narrow down the problem when you discover the leak. Also according to the max performance 4.6 book they don't recommend cometic mls gaskets for boosted applications only NA. Then standard MLS up to 20+ psi, and copper gasket with stainless lock wire / groove for over 25 psi. Also for street cars silicone rtv around oil / water passages... Applied to both sides of the gasket sparingly. For drag race only permatex high tack on the gaskets and crc block sealer to the cooling system.

Rotten luck bro. I hope the engine is OK. You really need to strip down the engine to check everything for damage(fingers crossed). I was amazed at how MEAN the engine sounded at the track!

I've been there so many times and my turbo 2v only made about 700. I rebuilt it 6 times and cost me well over 20k. Got it running and dumped it for 9200 buck and my life has greatly improved. I have a stockish 2016 Camaro SS that I road race and auto x and every time I start to do a built motor I remember the long painful road. Sorry to see this happen. Your situation is probably different than mine cause your attitude is still good.

Man that sucks I hate that for you!!! I think its head gasket I had a 2V I built with the Teksid block and didn't leak off cold but when warm it did and oil looked just like yours!! I had just about same setup Mahle pistons, Manley rods and Kellogg crank! Youll get it figured out... BTW love the channel and that thing is going to be a beast

I've been there boss. I know you're tearing it down to nothing because of the H20, but you're not gonna find anything wrong. Had almost exact setup, same thing happened after I thought it was good. The dude from across the pond is right IMO. About those heads warping. Changed to a iron Cobra block, MHS stage 3 pi heads with MLS Cometic head gaskets....no leaks at 28 psi. Anything is possible though. You gotta pay to play in this game. Good luck.

Compression test it. And see what cylinder is the suspect before you rip it apart. Sometimes you won't see things visually and you'll be pissing in the wind. Also a trick I've used is to take the compression hose off the gauge and get an adapter to an air chuck. Fill the cylinder with air and leave the rad cap off. If it bubbles then you know what to do. Fill each cylinder

I'm sorry for the misfortune Andy, may I suggest using copper spray on the head gaskets next time.? i apply two coats letting then dry, then one final coat & assemble while still tacky. Good Luck Andy.

One of those sleeves or leaking when the motor is under boost in hot

Bummer bro it was running so good i got no idea what could be leaking only when its hot or maybe only under turbo pressure to but you definitely need to tear into it and see what you can find hope its just a gasket issue ill be waiting to see 🔴🇺🇸🔧👍

Good luck hope you get it going

Is it possible that the head gaskets are only leaking when under boost?

I'm also going to guess that the head gasket area is the culprit. A lot more pressure in the cylinders than the 16-20psi from the cooling system. You can probably rule out the freeze plugs after that pressure test. I'm not an expert but I've done a few motor rebuilds and that's all I can think of. Hope it helps. PS: Not sure how your setup is now with the oil filter relocation but I remember the oil coolers can fail and mix coolant with out. If you have coolant line in that area check it over. Best of luck.

Heard a bunch of horror stories about cometic gaskets in different cars. Wouldn’t be surprised if that’s why.

Damm!! Keep us updated

Sounds like you lifted the head. Change the head gaskets out.

Gonna have to look for some type of ring etc to fit around the chamber to help the head gasket seal when your wot and higher boost. Or a better head gasket.

I had a head gasket that would leak compression into the coolant system when it got warm. Let it cool and it would run fine. Took a while to figure out cuz I didn't want to pull the heads. Just pull em, gasket and studs are cheaper than a rebuild

Bro that blows. Somethin great is gonna come out of this.

Just a question I never had the cometic MLS head gaskets some of the other gaskets used to require a couple heat cycles and then re torque the head studs

I'd say the boost lifted the heads just enough during hard acceleration to let coolant in.

Itsjusta6 who? Figure this out and start going for people, baddest stang on RU-vid

Clarksville Speedway!! Thats right down the street from my house. Hell I need help building my 4.6 2V lol

Head Gasket. Boost is causing the head to lift, shift or whatever. Need boost pressure to push the coolant into the cylinder. Could also be a a machining issue with the new sleeves. Were your sleeves wet or dry type? Did any of the spark plugs have coolant on them? Do a compression check to see what kind of readings you're getting. Start narrowing it down.

There would have to be a lot of pressure to pop out a freeze plug! With cosmetic Gaskets i usually run the engine dry to get some heat in the block/heads, loosen up the head studs in reverse order and retighten in order! Ive had them lift before and since preheating block dry haven't had a failure since with over 20 psi of boost on 13:1 compression!

It really does sound like a head gasket when it's on boost and or warmed up. I had the same issue but it was in a 2v

do a compression check on the cylinders..before tear down .. Keep moving forward pal.. hopefully easy fix.

Man I hate you had trouble. It looked great!!!!

Turbo water cooled? Possible crack in the turbo water jacket that only opens when the turbo is hot? I've seen that before so may be something to check but I'm guessing you lifted the heads.

I would double check your heads make sure after break in the head gasket didn't set down some also check the plugs when you did your leak down did you pull all the plugs out? Could have had the cylinder full of air and pushed the water through the rest of cooling system like it's was air bound

What happened to 7's? went right to 5's..SWEET!! i think your leaking is happening when hot/running. Small crack somewhere? Did you have your block and heads Mag tested? Or Flouresant dye checked? (Aluminum cannot be mag tested). maybe change head gaskets, torque and re torque several times after warm up?? IDK. Let us know what you find out!! Thanks for the awesome vids!!!

Check the cooling system for the turbo

Could it be leaking water at the intake cross over. Possible crack in the block. You can check for cracks using carburator cleaner. The crack will evaporate last.

The increase in boost probably raised the head and cause coolant to leak into the oil passage.

I know you had sleeves installed, do they have orings on the sleeve,if so they could cause it.

Deadly head gasket but that much pressure any cracks in the a metal wood of Shown

My guess is you had either head studs that stretched under the 14psi pass and it pushed water into the oil when the head lifted

Where did u get the cowl hood is it the 4 inch??

Sorry to hear brother. It's always something. So far, my lil 2v seems bullet proof. (Knocks on wood)

What was the issue?

I don't like the serrated washers under the head bolts. They will continue to compress into the head and loose torque pressure.

do you have a oil cooler pos getting in there

I think heads are lifting under boost. That car does sound different than any turbo 2v I've seen. Best of luck man 👍

Maybe worth a shot letting the car get warm and then doing the leak test. IIRC it's an aluminum block you have and maybe the slight expansion is allowing water to pass at a freeze plug or something.

Leroy had replaced his AL. Block with an iron block because it would leak to much under boost

Check the torque on your studs, I know you cleaned the threads when you assembled it but you could’ve pulled the threads on one of them. Or you have a crack somewhere. You’re not running enough to boost I wouldn’t think to cause an issue. Unless you have a deck surface issue. You might check the deck with a straight edge. Or you had a sleeve walk on ya.

I'd bet you have some block machine issue with the sleeves. A HG issue putting that much coolant into to engine would of been a huge mess all over the track! Very unfortunate man. Hopefully it's somthing cheap to fix. Pulling the engine sucks already.

I feel your pain this is like a nightmare from hell. I wonder if you will ever get those heads to seal to that block 😱

Is this car still street legal ?

Hey buddy that's a nice car and motor, I have a 2007 Ford f150 with a 4.6 litre v8. Is it possible to put high performance parts into it it's a pick truck engine? I really wanna get the motor tuned but I wanna make sure it can be done.

Damn 🤭...... Only one way to know, just tear into it. I would automatically think head gasket....I hope you get it figured out bro. Sucks!!

Pushing coolant under boost possibly!

Is the head possible cracked?

I'm a new subscriber what set up are you running

if it was a head gasket would seem to have combustion pressure in the cooling system

The combination stock length ARP studs and 3 layer MLS head gaskets have give most Cosworth owners loads of problems here in Scandinavia. When the engine heats up and grows, nothing but the heads themselves gives way. Then one loses clamping force and the head gasket starts leaking. One other thing. Boost rules so I never understood why high compression ratio should be used in a turbocharged engine. The rapid pressure rise and pressure curve in the combustion camber becomes brutal and liftes the head(s) and destroys parts. Check out so called "Soft heads" for boosted engines. A 80 mm BW turbocharger pushes 50 psi easily, so high compression ratio is not neccessary to get horsepower even if the fuel can handle it. IMO.

Do a compression test then a leak down test. A leak down tester will pressurize a cylinder if it’s a blown head it will show pressure in coolant system

Re torque them head studs!

Time for ls motor buddy good luck.

That's a tough one as there's so many changes this year... Cometic MLS gaskets are tough but not invincible. I've seen them blow quite often and don't start leaking until the engine is hot and the cylinder pressure exceeds that of the coolant. That is my first guess. Second since you had the block machined and sleeved I would do a leak down test real quick before you remove the heads. That may pinpoint the problematic area or areas. I'd verify that when the block was sleeved the the water jacket was not cut into or damaged in any way. I've personally seen a few 4 cylinder Honda motors the machine shop got carried away with and they leaked coolant under high pressure/temps. Either stress fractures or just plain machined too far causing weak spots and even blatant holes straight down into the pan.

Definitely sounds like it lifted the heads. How much boost did it make on the last pass?

Didn’t the trick flow heads have a threaded plug that had to be plugged on one side or else it would leak coolant into the oil?

Let me know where you at i would freaking record all day long for you bro i love this car !

U could be lifting the head under boost but u didn't have that much boost running through it.... hopefully it's not a hairline crack that is only leaking when motor is warm and it comes into boost... wouldn't hurt to get it magnafluxed both heads and block if u can't find anything else

I'm definitely concerned about the amount of coolant that was in your oil pan for the system to hold 20 psi....but hear me out for a second. I've blown a few head gaskets (both figuratively and literally) and what I wonder is if you blew what I call a flapper. It's tore in such a way that with the motor running it pushes the broken part open to allow seepage. You push from the coolant side without the motor running and it wedges it back closed where it should be. I think that is a plausable explanation. My concern goes back to the amount of coolant in the pan. I don't know if you ran the car again after you shut it down but if you didn't... Then I'll bet that gasket went as soon as your 2-step kicked in at the tree. Your saving grace would be that the car only ran for maybe a total of 8 or 9 seconds after that point before you shut it down...even if it was balls to the wall just over half of the time. Best wishes for good luck bro.

Is the block "O" ringed?

Bummer man but this is what happens when building high horse power engines it's always something. Hopefully no damage was done and this is an easy fix.

Probably lifted the head, but it shouldn't have lifted under that little amount of boost unless the torque wasn't correct or an issue with the studs of some sort.

Re torque the heads and compression test each cylinder..

Oil cooler gasket at the block?

You might have lifted the heads

I hope it isn't hurt but if it is time to go with a teksid block and ftw

Intake gasket bro

Definitely not cool. Sorry this happend to you guys. I'd be looking head gasket ( cosmetic is good ,but things happen ) my 427 Windsor did this under boost only. I pressure checked it cold , all good , checked hot ,all good , once I staged the car boom. Hope I'm wrong and it's something very minor and no other damage occurred. Anyway I really hope things work out and ya get squared away and hurt some feelings with this 291 cubic inch 2v terror.

Hey brother, That car is bad *ss, I'm a Mopar Nut but, love that Car brother, I just sub to your channel, can't wait to you get it we're it needs to be. That will be Sick,💯💪👍👍👍, Peace brother

Your lifting the head at high boost . Iv seen it before.

🤔 I can’t really say I’ve seen that problem before

Check your head bolts

Compression test on all the cylinders

Intake manifold gasket

The curse of Texas lives on

Dang

subbd 👍🏾👍🏾👍🏾

Crack block sorry that's my guess

1st

Hey man love the car and love the info you give. I also have a 2 valve that is turboed that iv been building. I went threw 2 set of cometic head gaskets with the same thing happening. I went back to a OEM Ford. head gasket and have not had that issue agin. Check my car out if you have time man it LoudbutSlow on youtube.

Turn the motor over with the pressure tester on with a rachet or breaker bar to cycle the pistons to check for cracked sleeve

Cometic head gaskets are junk I would look I to SCE they make a really good quality copper gasket

Bummer Andrew! But keep your head up brother you’ll get it.

I'm glad u shut it off quickly. Hopefully that gave you some type of insurance in the end. No real words of wisdom beyond starting to pull the front cover and heads. If I come up with anything I'll send it thru fb. Sorry bro

Crap, bro! ! I'm sorry this happened but look at the bright side. You did your job correctly and even caught it before it locked up! Prolly it just me but never trusted aluminum blocks under boost 😟

Head or head gasket issues put coolant out the pipes or if bad enough hydro the thing . Coolant in the oil spells block or sleeve issues.... Sorry to say... Sucks...

Damn hat sucks, but I know if anyone can come back it’s you! 💪🏼

Aluminum block expands when really hot ? Possibly need a special head gasket Factory design for aluminum on aluminum action

If your not using MLS gaskets reason 1. Reason 2 have your heads o-ringed. Just a thought man. I really dig 2 valves

Cosmetic gasket always issues with those. Hopefully it’s nothing serious and you get back out there soon good luck!

Doesnt heads have all those small Allen head plugs I had issue some are for oil and coolant and had one off and got coolant in oil

it can lift the head then after it cools down it will re seal and not show the leak during a pressure test . pull the heads and look at the gaskets. what cometic gasket are you running (MLS, MLX? )