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Jesse Wens
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« Reply #60 on: March 11, 2021, 10:25:45 am » |
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They are machined down to a a barrel shape with a wall thickness of .100
After having unusual high wear due harmonics on the intake valve the wall thickness was increased to .112 to enhance rigidity and increase the natural frequencies....
Is it primarely the extra weight that stops the harmonics or the barel shape? |
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thinking out of the box will get you to go faster cheaper in the long run, time is on my side
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Frallan
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« Reply #61 on: March 11, 2021, 10:37:59 am » |
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I had to find a picture....
I was "slightly wrong" on my statement of the Koenigsegg Auto Verdi rod.
Some similarities but very different.
Might be off topic to your engine but most of us like this kind of "Engine Porn", so I hope you are OK with it?
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MeXX
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« Reply #62 on: March 11, 2021, 12:04:30 pm » |
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I had to find a picture....
I was "slightly wrong" on my statement of the Koenigsegg Auto Verdi rod.
Some similarities but very different.
Might be off topic to your engine but most of us like this kind of "Engine Porn", so I hope you are OK with it?
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Dear Fredrik.... you are more than welcome... I really appreciate the comparison with Koenigsegg.... you are right looks like Koenigsegg copied my rods.....  .... MeXX |
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« Last Edit: March 11, 2021, 13:08:42 pm by MeXX »
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Drag or Die
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MeXX
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« Reply #63 on: March 11, 2021, 12:23:42 pm » |
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THANKS AGAIN!!! I know we are many who adore this handicraft and the fact that you share so nicely.
Really makes my day as updates keep coming.
Pushrods are interesting.
How Pro Stock/Pro Mod/TF etc. over the years increased size and rigidity and kept on gaining better harmony albeit the large increase in weight.
I bought CF pushrods in mid 80´s and tested them on a friends 2332 with FK89.
We never got it to work. The zero expansion of the PR spooked us.
We even tried quarter of a turn tight at startup and that should not have been good at all, still it fired up (theoretically with some valves open) BUT soon very much play stopped us.
In latest RET magazine AWA is again promising the release of both conrods and now CF PR.
Have anyone over the years they have been advertising, seen or heard of any engine running their parts?
So, how do they solve the zero expansion or it is not an issue (less) on watercooled and rigid engines?
Conrods: Your rods are really similar to latest Koenigsegg Jesko conrods made by AutoVerdi. Very cool! Now their rods are not titanium.
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Yep... I checked out the parts from AWA @ PRI 2018..... but the do have only one dimension of pushrods .500.... very light... only 59g but not suitable fid my application.... [ Attachment: You are not allowed to view attachments ] [ Attachment: You are not allowed to view attachments ] [ Attachment: You are not allowed to view attachments ] . |
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« Last Edit: March 11, 2021, 12:55:53 pm by MeXX »
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MeXX
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« Reply #64 on: March 11, 2021, 12:48:27 pm » |
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They are machined down to a a barrel shape with a wall thickness of .100
After having unusual high wear due harmonics on the intake valve the wall thickness was increased to .112 to enhance rigidity and increase the natural frequencies....
Is it primarely the extra weight that stops the harmonics or the barel shape? First of all.... the more pushrod the better.. don't be concerned about the weight of the pushrods.... but the dimensions are more tricky.... The common thinking is that you can get a rigid pushrods by increasing the diameter and decreasing the wall thickness.... So far so good.... But the reality is more like a teeter toter.... Bigger diameter more rigid 🙂 but heavier ☹ and lower natural frequencies 🤮 Less wall thickness less weight 🙂 but less rigid ☹ and lower natural frequencies 🤮 So the best solution is a small big diameter with small big wall thickness.....🙄 Keeping in mind that the higher the rocker ratio get the more you are running in trouble... its just a multiplier of lift and troubles... especially everything that exceeds 1.8 |
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« Last Edit: March 11, 2021, 20:12:41 pm by MeXX »
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Drag or Die
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MeXX
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« Reply #65 on: March 12, 2021, 09:48:37 am » |
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The next part I wanna point out is the oiling system....
As the big boys... the V8 Pro Stock I'm using dry sump on 0W oil...
The pump of my choice is Dailey Engineering 5 stage pump...
The pressure section is a 1.200" wide spur gear
The 4 scavage sections are are 1.250" wide two lobe rotor style.. like a tiny roots blower....
The advantage of this style is to have low drag and the create quite good crank case vacuum.....
Each cylinder head is scavaged by one stage... and a kind of mini sump is scavaged by two stages....
Turned out to be quite a challenge to find the right place for the pump and do nice and clean plumbing for all 7 lines....
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« Last Edit: March 12, 2021, 10:03:05 am by MeXX »
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MeXX
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« Reply #67 on: March 13, 2021, 08:10:46 am » |
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Some pix of the internal of the Dalley 5 stage pump....
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MeXX
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« Reply #68 on: March 13, 2021, 08:14:13 am » |
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More pix....
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MeXX
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« Reply #69 on: March 13, 2021, 08:17:57 am » |
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Check out the super tricky two piece titanium clamp for the #16 90° Wiggins fitting... if the torx bolts are not tighten it is able to sniffle to make it point to the right point... After tightening the bolts it is tight to avoid unnecessary movements....
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« Last Edit: March 13, 2021, 09:55:13 am by MeXX »
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Drag or Die
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ibg
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« Reply #70 on: March 13, 2021, 08:27:01 am » |
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Very impressive packaging of the pump and mini sump, also interesting you scavenge both heads.
I see in some places you use nylon braided hose and some places stainless braid. I'm wondering why not all nylon braid for the lower weight?
Also, was there a particular reason for the Wiggins clamps on some hoses?
thank you for your patience in answering our questions.
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MeXX
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« Reply #71 on: March 13, 2021, 09:48:03 am » |
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Very impressive packaging of the pump and mini sump, also interesting you scavenge both heads.
I see in some places you use nylon braided hose and some places stainless braid. I'm wondering why not all nylon braid for the lower weight?
Also, was there a particular reason for the Wiggins clamps on some hoses?
thank you for your patience in answering our questions.
Yep... last first.... the pix are some years old.... now all hoses are nylon brside.... according the Wiggins.. I ❤ Wiggins claps.... but the joints do suffer from wear... I checked out that long hoses (like on the pump) that have the ability to move... will move.... sometimes very wild... I was able to see thar on the dyno... So.... hoses are either very short to get both side Wiggins.... or mounted... or have one side traditional # fitting... As my pushrods do have very low angle (less than 1.5°) the scavage of the head has the advantage that the oil doesn't need to "rinse down" the pushrod tube... tending to flood the valve cover... The mini sump is just a pick up point for the oil.... |
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« Last Edit: March 13, 2021, 09:55:59 am by MeXX »
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MeXX
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« Reply #72 on: March 13, 2021, 10:11:59 am » |
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Machining of a custom tool steel shaft....
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MeXX
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« Reply #73 on: March 13, 2021, 11:19:39 am » |
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Found one of the latest pix...
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The pump is mounted on a billet bracket which holds the cam home sensor too...
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« Last Edit: March 15, 2021, 13:46:14 pm by MeXX »
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MeXX
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« Reply #74 on: March 15, 2021, 22:32:16 pm » |
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MeXX
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« Reply #75 on: March 15, 2021, 22:35:45 pm » |
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MeXX
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« Reply #76 on: March 15, 2021, 22:37:08 pm » |
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« Last Edit: March 15, 2021, 22:56:21 pm by MeXX »
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Abadco2
Newbie
Posts: 48
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« Reply #77 on: March 16, 2021, 18:22:58 pm » |
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My understatement, WOW!
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brewsy
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« Reply #78 on: March 16, 2021, 20:43:18 pm » |
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My understatement, WOW!
AND SOME!! All that for an oil tank!! |
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ibg
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« Reply #79 on: March 16, 2021, 23:49:44 pm » |
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Mexx, how many litres do you run in the tank and how many might be in the whole system with hoses and filter etc?
Do you have a breather on the engine or just use the one from the top of the tank?
it's a great tank design with the long path to de-airate the oil and a 'sump' on the bottom.
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MeXX
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« Reply #80 on: March 17, 2021, 10:37:53 am » |
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Mexx, how many litres do you run in the tank and how many might be in the whole system with hoses and filter etc?
Do you have a breather on the engine or just use the one from the top of the tank?
it's a great tank design with the long path to de-airate the oil and a 'sump' on the bottom.
Hi... the tank is quite big... although it doesn't look so.... the thinking behind it was to have a high volume tank in the bottom and a smaller (6") tube to form a high speed hydra cyclone... (yep the effect that dyson uses for their vacuum cleaners...) to get rid of the aeration in the oil... which is definitely quite extensive due the use of the lobe design savage stages.... which is high volume oil and air resulting in high crank case vacuum... the tank has a capacity of 12liters and is filled up to 10 liters.... In the bottom there are lots of braces to hold back the oil sludge.... As there is high crank case vacuum there is lots of air pumped into the tank which is routed into the frame rails and from there into the exhaust collector.... [ Attachment: You are not allowed to view attachments ] [ Attachment: You are not allowed to view attachments ] |
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« Last Edit: March 17, 2021, 12:59:46 pm by MeXX »
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brewsy
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« Reply #81 on: March 17, 2021, 20:16:21 pm » |
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Mex, (not that I could) Teach you how to suck eggs but I assume you've seen this?? https://www.youtube.com/watch?v=noO16P5vSwQIs it perhaps that you cant fit any more length onto the end of the oilpump assembly?? Cheers Marc |
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MeXX
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« Reply #82 on: March 18, 2021, 09:27:10 am » |
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Mex, (not that I could) Teach you how to suck eggs but I assume you've seen this?? https://www.youtube.com/watch?v=noO16P5vSwQIs it perhaps that you cant fit any more length onto the end of the oilpump assembly?? Cheers Marc Hi Marc.... yep... I have seen that video, before.... on my old setup with big diameter/low height oil tank and I had a little aeration in the oil... nothing really bad or that concerned me... but on the new setup I tried to do it better... and U know what.... the small diameter/tall oil tank works much better.... see the pix of my old setup.... [ Attachment: You are not allowed to view attachments ] [ Attachment: You are not allowed to view attachments ] [ Attachment: You are not allowed to view attachments ] [ Attachment: You are not allowed to view attachments ] |
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« Last Edit: March 18, 2021, 09:41:55 am by MeXX »
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Eddie DVK
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« Reply #83 on: March 18, 2021, 10:25:44 am » |
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Man, access to such milling machines would be so cool.
I love all those pictures, good engineering.
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Regards Edgar
" Type 4, it is a completely different engine. You have to drive one to understand! "
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brewsy
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« Reply #84 on: March 18, 2021, 18:03:46 pm » |
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Hi Marc....
yep... I have seen that video, before.... on my old setup with big diameter/low height oil tank and I had a little aeration in the oil... nothing really bad or that concerned me... but on the new setup I tried to do it better... and U know what.... the small diameter/tall oil tank works much better.... see the pix of my old setup....
Even your old tank is a work of art! Jeez  |
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MeXX
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« Reply #85 on: March 19, 2021, 20:47:52 pm » |
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The next part I will cover is the head.... probably the real master piece... but for sure the most research and development... Being very proud to get help from one of the gear heads in head development from scratch... Darin Morgan how helped me to get my quite well performing heads to the next level..... http://cal-look.no/lounge/index.php/topic,22692.60.htmlTo achieve maximum power it was necessary to have high valve lift of over .900" @ over 9000 RPM To achieve that the following changes were done. ☆ valve rotation in addition to the canted valves ☆ longer valves for more valve lift and better flow ☆ Straight Column Valvetrain (SCVT) features pushrods with less than 1.5* of angularity [ Attachment: You are not allowed to view attachments ] [ Attachment: You are not allowed to view attachments ] |
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« Last Edit: March 23, 2021, 10:30:33 am by MeXX »
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D.R.Evolution
Newbie
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« Reply #86 on: March 26, 2021, 06:30:18 am » |
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I like the project and the consequent light weight approach of the car! It's very impressive how much hours you spent for the whole project and to see the outcome! Thanks for sharing all the details, it's always interesting to see the progress on the project!
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MeXX
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« Reply #87 on: March 29, 2021, 06:49:14 am » |
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These are basically pix from the version 2.3 which ended up with a vane on the short side radius.....
Just to avoid common misunderstanding these vanes are no devices that increase flow numbers or make the airspeed numbers more even....
They are just the solution for the problem.... if you have fuel fall-out on the shortside radius....
They help to give, the fuel that is trailing down the shortside radius the chance to be picked up by the air that is accelerate very locally by the vane...
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« Last Edit: March 29, 2021, 15:38:42 pm by MeXX »
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mikko k
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« Reply #88 on: March 30, 2021, 11:01:05 am » |
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Hi,
If it’s not secret, I’d like to ask that, how much is the cylinder pressure when you spin the engine by starter?
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MeXX
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« Reply #89 on: April 06, 2021, 12:50:40 pm » |
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Just for comparison this are the pix from the new version V3.... how they started life....
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The Cal-look Lounge
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