MY 420a race car!!!!!

[ILLegit420aT]

Very nice build, what road are you taking for fuel management? i just popped in

[DSM-ZERO]

im have a Electromotive Ted3r and ignition...

EVERYONE...get ready for Saturday!!!!!!

I have the whole day on the Dyno!!

[bullettdsm]

Zero, I want to hear about any lifting head issues. I don't remember what you did between the block and head (if anything). Arps? O-rings?

Good luck with the dyno and the lifting info is pretty important.

MB

[Slippi84]

http://www.full-race.com/articles/traction_bars.pdf

I know it's dyno day but take a look at that and check out how they angled the mounts at the bar so it wouldn't put any lateral force on the bearing/bushing.

[Twistaye]

Yep, been watching, craziest 420a build I've seen thus far. Let's finally see some results, hopefully you had no issues! Just curious if you're on leave or is the shop still doing all the work for you? Only a month left, congrats! Looks like I'll be heading back over there early next year. Lets see some results!

[crab1092]

I too am anxious to hear about any head lifting....

[DSM-ZERO]

Ran into some wiring issues today will try again on monday..SORRY GUYS

[bullettdsm]

Hmm, I understand the post deletions but I think my original question on head lifting was pretty legitimate. There are a few references out there about heads lifting above 400whp. This could be the weak point in any 420a power build (if true). That's why I made the original request of info on Zero's head lifting; As I do again.....

MB

[Slippi84]

Originally Posted by bullettdsm

Hmm, I understand the post deletions but I think my original question on head lifting was pretty legitimate. There are a few references out there about heads lifting above 400whp. This could be the weak point in any 420a power build (if true). That's why I made the original request of info on Zero's head lifting; As I do again.....

MB

Why don't we just ask awddynamite I'm pretty sure he would have delt with it if it's true. He mad like 440 or something like that.

[1slow97]

Zero, did they put Crank Straps on, for the bottom of the block.

[VelocitàPaola]

Originally Posted by bullettdsm

Hmm, I understand the post deletions but I think my original question on head lifting was pretty legitimate. There are a few references out there about heads lifting above 400whp. This could be the weak point in any 420a power build (if true). That's why I made the original request of info on Zero's head lifting; As I do again.....

MB

Oops... got a little delete-happy; didn't mean to remove that one...

[DSM-ZERO]

I believe the heads lift do too poor efficiency range on the turbos at high boost levels.
This will cause alot of hot air going into the headthus causing it to lift........Now im pretty sure there are many reasons for every occasion in wich a head lifts but IMO this would be the main reason why..

Now Crab1092

brought tis problem up to me a couple weeks ago and since then i have done some home work and looked into it.

here are some solutions i came up with.
I can re-heat treat the head studs i have now to raise there strength BUT heat treat it too much and the threads become too brittle.
or
I can buy some L19 or H11 head studs but they are very expensive $1200-1400$ for a set....BUT they have a higher tinsel strength..

I believe that off the shelf ARP's have a strength of 180
Re- heat reated will have a strength of around 280
L19 and H11 have a strength of 320

SO WHAT AM I GONNA DO....right now NOTHING i think ill be fine, but if the head dose lift i might go out and get some L19 or re-heat treat some ARP 2000 head studs

[DSM-ZERO]

Originally Posted by 1slow97

Zero, did they put Crank Straps on, for the bottom of the block.

What are Crank Straps???? Sorry for my ignorance

[crab1092]

When i contacted ARP about getting some L19 studs made, I inquired about re-heat treating the regualer 8740 studs. The guy told me that they could treat the studs to make them have more tensile strength, but then they would become more brittle. As i said on one of my PM's, i think if ARP could just reheat their regular studs, then they would do it as part of their regular manufacturing process.

I am going to get some L19 studs. I am trying to get more people together so that we can afford them. I have not had any problems with my head lifting yet, but i want to stop it before it happens.

Now as far as your point on the turbo being out of its efficiency range i think you are right. The turbo would definetly be shooting out hot air which would in turn cause more detonation. This would definetly cause enough cylinder pressure to lift the head.

The head lifting is not unique to our engines. 4g63 guys have been using L19 studs to fight headlifting for a while now.

[Slippi84]

I don't know how applicable it is but Chris Rado welded his head to the bloc or something of that nature on his scion tc drag car. For the average guy this is def not an option but for you zero you might want to look into it and if it's even possible with our engines.

[crab1092]

Scions engines are aluminum block and head. Ours are not. Even if you wanted to, you cant weld aluminum to cast iron.

[Slippi84]

Originally Posted by crab1092

Scions engines are aluminum block and head. Ours are not. Even if you wanted to, you cant weld aluminum to cast iron.

Yeah that'swhat I was afraid of. I didn't know for sure so that's why i stated that I didn't know if it was even appicable. Oh well.

[DSM-ZERO]

I guess now the valve cover is off and we are going with hydraulic lifters...

[bullettdsm]

Originally Posted by DSM-ZERO

I guess now the valve cover is off and we are going with hydraulic lifters...

Don't get worried about that. Its a good choice. I personally know 2 guys who took that route (yes 4g63, but high horsepower, high rev, 2.0 application). They put them on, tried to get them to work for awhile and finally pulled them and gave up on them.

I have only read about a couple of guys on the Neons board that the solids worked out for (and that's only their claim). I understand the theory behind using them, just haven't seen them work real well.

But that does beg the question of why you would go with the DCR oil retrictor if you already had solids? Although now you may need it.

MB

[DSM-ZERO]

Yea we have been talking alot with Darrell Cox Racing about this issue and others. This is what he suggested and he runs the same set up on his drag car "the red sled"..Were Gonna use SRT4 hydraulic lifters and have them cut to size so they fit

[Slippi84]