5VEU Hemi

[oldeskewltoy]

a bit more discovery.... much different angle on the rockers, and pushrods




more to come....

[oldeskewltoy]

Headwork begins......

The castings are pretty good as far as core shift, but some alignment, and casting correction is needed, as well as cleaning up the short radius





Intakes nearly finished on this head.......





Exhaust side still undecided....?????


More to come........

[oldeskewltoy]

on the intake side...

I've not yet mentioned the exhaust side...* This has to do with a few possible options open to me.



As you can see, the exhaust side exhaust valve could be larger(original is 34mm).... the seat is even large enough to accommodate a bigger valve.*





A bigger valve is EASILY available, the Toyota 2/3TC engines use a nearly identical exhaust valve(length, stem, keeper groove) except the diameter is 36mm!






And if you look back to the castings, the exhaust port appears to be able to support a larger valve.....





So... that pretty much leads me to where I am right now...**Getting the flowbench prepared to run the hemi heads.*





The thought is to test the current valve and see if we are above/below a flow ratio of 65% of the intake flow is the exhaust flow.* Above 65%, leave it alone, run a 34mm valve, with a fresh valve job.* Below 65%, and have the valve seat machined to accept the 36mm*valve.



To run the head, I need another one off tool....* *a "new" valve actuator... a friend will need to weld that nut(plus another) to the metal bar





more to come........*

[oldeskewltoy]

people often ask me why do I post up my work... sometimes its so others can see what I've missed.






There is something in this I missed...... Note the invoice shows 2 head gaskets... not one left, and one right????


A reader "from another forum" noticed it! Why can't I have the same gasket.... because the cooling from one head to the other would be significantly different!!!






Catching this now saves me time... money... and anger issues later.


More to come.....

[oldeskewltoy]

Catching this now saves me time... money... and anger issues later.

not sure what the issue is.........

first they sent me this.... (both sides of same gasket) both ends of the gasket are open for coolant passage.....




so I sent Cometic the above explaining they had to close one end.


I even sent them BACK the gasket they didn't make..... hoping that they would get it right.....


they responded and sent me this yesterday....(top 2 scans of 3 panel)

As you can see, they closed up one end, but the scan shows the gasket I already have.... NOT the one I need.





So I made... what I hope to be.... a more concise photo showing what I need





I am SOOOOO glad I caught this now....

more to come....

[oldeskewltoy]

So... while I wait to see if Cometic got it right this time....



Let's see if we have any really smart people in here.... can anyone tell me what we are doing... and why it is important......






Anyone...???

[oldeskewltoy]

Protractor to set properly the angle on the new push rod "guide" ?
(Push rod stuff are totally uncommon here so I have no idea)

On a side note, clamping that cast piece directly on the vice make me cringe. I hope they are soft jaw.
I would have gone with a 1 2 3 block and strap clamps, or better, an aluminium block with tapped hole matching the one on the part (even for a "one time" job it would make sense since you have 4 of them)

The vice is only holding the lifter bore housing so we could insert the bar stock into the lifter bores so we could measure "lifter bank angle".



Without knowing the lifter bank angle we can not hope to learn the camshaft lobe center lines.

Why do we need to know that?? I'm changing the whole engine, all the specs I found show peak power occurring @ about 4400 rpm, additionally it originally was designed for use in their top of the line limo - so smooth operation/idle was important. I'm changing all of that, I'm hoping to push peak power rpm to about 5600(redline @ 6000), and to introduce a small amount of lope at idle

Sooo... the camshaft centerline is now the focus, for a smooth idle, and low rpm peak power, the likely centerline is around 116 to 118, maybe even higher, but to attain my goal, the likely centerline is closer to 110-112.



more to come....

[oldeskewltoy]

By jove, I think they got it....





more to come....

[oldeskewltoy]

Many of my photos have appeared here.......... anyone here speak/translate Russian???

[oldeskewltoy]

Getting the flowbench prepped for the 5V-EU head.....






.... and getting the 5V-EU head ready for the flowbench..




more to come.....

[oldeskewltoy]

Drum roll please...........





more to come.... :cheer:

[oldeskewltoy]

Getting the flowbench prepped for the 5V-EU head.....


.... and getting the 5V-EU head ready for the flowbench..


more to come.....

I spent a while looking, but never found anyone who had flowed a 5V head before... so I did.





That is pretty good, especially considering valve size.



As to bench racing numbers, that port should support up to about 340-360 n/a hp


more to come....

[oldeskewltoy]

Glad to see you are still posting on this. I want to see a burnout when it's done.

​maybe even show up @ the local drag strip....






centerlines are now known... and my guess was wrong........ I had thought they were 116+ do to the smooth idle, and the short powerband... I was wrong! The cam has a 110 degree centerline.... no need to screw with moving it! So, the word is out to the cam grinder that we want to twist this baby to 6000, and to get as much lift as we can - do to base circle, valve lift will be about .450"


more to come....

[oldeskewltoy]

I'm sending the timing cover into Cometic they can scan both sides... I'll feel more confident with gaskets....




more to come.....

[osmerjosmer]

My head gaskets completely fell apart on removal what do you think the best way to get cometic to make some would be? Did they have a scan on file for yours still?

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