Building a Fdrd 4-valve V10 out of a 6.8L V10 and custom made heads and camshafts.
First two videos are up! Fully welded V10 4v heads!
check the channel out. https://www.youtube.com/channel/UCA2_CuSSbv9pL4EYpw_Nchg
Building a Fdrd 4-valve V10 out of a 6.8L V10 and custom made heads and camshafts.
First two videos are up! Fully welded V10 4v heads!
check the channel out. https://www.youtube.com/channel/UCA2_CuSSbv9pL4EYpw_Nchg
I'm following this out of sheer curiosity... and in case the V10 in my Excursion outlives the truck itself.
That's pretty cool, and it seems like a real home-build style project!
What are you going to do for cam blanks?
Weld one together?
Enjoyed your videos! Will be looking for more!
bentwrench said:What are you going to do for cam blanks?
Weld one together?
Initially we wanted to use 2V cores and get those custom grounded (4 of them) for our application, but the lobe separation is different on the 4-valve cams, so that won't work.
At this point, we will likely need custom cores made. There's a company local to us that does custom cores and can fab cams to our specs so we will try that first. We'll probably also call up COMP cams to see if they can do anything for us.
Last resort would be welding a bunch of 4-valve cams together but hopefully it doesn't get to that.
Fourth video is live!
In this video, we port & polish the heads, and install bronze valve guides. Heads are going off to the shop this week!
enjoy!
I.Cant.Not.Subscribe.to.this. thread.
the awesome tractor beam pull of a "V10 four valve project" post
Anyone have any experience or know any shop that is willing or the ability to manufacture custom camshaft cores?
we have a shop that said they can do it, but I want to start planning ahead in case that falls through.
Thanks in advance!
BuildItYourself said:Anyone have any experience or know any shop that is willing or the ability to manufacture custom camshaft cores?
we have a shop that said they can do it, but I want to start planning ahead in case that falls through.
Thanks in advance!
Call these guys:
https://www.callies.com/
Video#5 is live!
In this episode we design and 3D print a prototype intake manifold, check it out!
https://www.youtube.com/playlist?list=PLaKku7QRgJp46pKr4tavI3hgqcGd7P7AP
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In reply to Choclito3000 :
Do you know why V12's are relatively common? While V10's are rare? Take a circle and divide it every 60 degrees that's 12 divisions. With a 4 stroke motor every power stroke is balanced.
With a V10 it would be 72 degrees and nothing is naturally balanced. They do it with weights and accept the uneven firing in the form of vibration. A heavier vibration damper. And the fluid in the torque converter keeps it acceptable.
In reply to frenchyd :
This is an even fire V10.
To join the head segments, I would have looked at brazing them rather than welding.
Precision finish the joints with engineered gap for braze material.
Fixture the pieces to ensure precise alignment, and use a precut braze insert between them.
Salt bath or vacuum braze the assembly.
A well designed braze joint can exceed the strength of the base metal.
No issues with leaking water or oil passages, or with HAZ warpage from welding.
Use a pair of precision ground steel drill rods with same OD as the camshaft journals.
Use a flat plate with stud holes to keep the pieces in correct alignment for block attachment.
Surface the brazed head assembly to get a flat surface to mate to the block.
Each head stud generates what, 16,000 lb of tensile clamping force?
That said, I admire that they just went for it with what they had at hand.
BIY!!!
In reply to frenchyd :
True enough, but there have been many successful V-10, not all 90 degree either.
Same with I-3, I-5, V-5, (even I-7).
Flat plane V-8 have their issues as well.
Engineering is about juggling compromises to meet requirements.
An I-4 larger than 2.5L starts to get really rough without balance shafts ...
yet they seem to be pretty popular.
BuildItYourself said:In reply to frenchyd :
This is an even fire V10.
Check your PMs, I got a couple contacts for you
Episode 6 is live people!
We have started machining parts for the custom 4v V10 intake!
Check it out! https://youtube.com/playlist?list=PLaKku7QRgJp46pKr4tavI3hgqcGd7P7AP
Episode 7 is Live!
4V V10 Intake Manifold is done! this one took a lot of time, from machining, cutting parts, to grinding and welding and more grinding and more welding lol
I think it came out great! what do you guys think??
Awesome, the standard 6.8 in 2v or 3v spec is pretty crappy, eager to see if 4v C heads wake it up.
frenchyd said:In reply to Choclito3000 :
Do you know why V12's are relatively common? While V10's are rare? Take a circle and divide it every 60 degrees that's 12 divisions. With a 4 stroke motor every power stroke is balanced.
With a V10 it would be 72 degrees and nothing is naturally balanced. They do it with weights and accept the uneven firing in the form of vibration. A heavier vibration damper. And the fluid in the torque converter keeps it acceptable.
And yet the Formula One V-10 era is still looked back upon nostalgically.
Your "trumpets" turned out great!! Interesting build!
In reply to TurboFource :
Thank you! I probably inhaled 10 lbs worth of aluminum dust making this intake lol
In reply to bumpsteer :
that's the plan! We are also building the rotating assy for serious power on this one. We are still waiting for some parts to come in but we will be doing a build breakdown of all the parts going in the engine in the next video or so.
In reply to BuildItYourself :
If I recall correctly, the 6.8 crank is kinda funky. Eager to see how many RPM you'll get out of it or if it proves vibrate-y.
Btw, how does it work trying to buy modular pistons and rods when they usually come in sets of 8? Do you have to contact the company and ask for 10?
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