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MeXX
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« Reply #30 on: September 08, 2013, 08:35:29 am » |
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Hi
Here are some updates:
As after a broken crank I had to wait for replacement; I made some minor changes.
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"Luckily" the crank broke during the burnout and I was able to feel that something was going wrong switching off the engine and saving allot of other parts.
MeXX
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« Last Edit: September 08, 2013, 08:39:35 am by MeXX »
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MeXX
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« Reply #31 on: September 08, 2013, 09:00:41 am » |
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As I wanted to raise the compression ratio from 12.2 to 13.8 it was necessary to machine valve pockets into the pistons.
Modeling clay was use to see the "finger print" of the valves:
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By cutting the clay you can see the clearance between valves and piston:
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2.5mm deep pockets were machine:
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MeXX
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MeXX
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« Reply #32 on: September 08, 2013, 09:14:45 am » |
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The valve springs K-Motion K1100 were changed to state of the art micro polished PSI springs. The K-Motion titanium retainers were changed to Del West tool spring retainers. The K-Motion steel locks were changed to Del West titanium locks. [ Attachment: You are not allowed to view attachments ] [ Attachment: You are not allowed to view attachments ] [ Attachment: You are not allowed to view attachments ] Check out how thin the new tool steel retainers are  [ Attachment: You are not allowed to view attachments ] MeXX |
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MeXX
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« Reply #33 on: September 08, 2013, 09:25:05 am » |
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Thanks to Thorsten Pieper I was able to test his new tool steel lifters.
They weight only 56g and need no fancy break in procedures so you can change the cam without changing the lifters.
thanx Thorsten
MeXX
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« Last Edit: September 18, 2013, 07:06:07 am by MeXX »
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Type1/DVK
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« Reply #34 on: September 08, 2013, 16:45:52 pm » |
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thanks for sharing all your info and pictures, really nice to be involved!   |
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DDD#8 - 14.74sec @ 1776cc - Member of: DVK ~ Der Vollgas Kreuzers - www.ultimatevw.nl - and racing engines |
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Shag55
Full Member
Posts: 220
Shag Leone, SL-1racing
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« Reply #35 on: September 08, 2013, 23:36:47 pm » |
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Those retainers are nice! Top guys are now using mostly the tool steels.
I thought you were roller set up on this motor? Or are the TPs for a back up motor?
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Fasterbrit
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« Reply #36 on: September 12, 2013, 08:17:15 am » |
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Mexx... Have to say your engine is a work of art! It really is beautiful. Shame about the crank breakage. Any ideas as to why it broke? Does the grain structure of the material give any clues?
Regards, Matt
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MeXX
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« Reply #37 on: September 18, 2013, 07:09:52 am » |
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Those retainers are nice! Top guys are now using mostly the tool steels.
I thought you were roller set up on this motor? Or are the TPs for a back up motor?
Hi Shag To keep it easier for the valve train my engine is still flat tappert setup. But V2 season 2014 will be a roller setup. MeXX |
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Shag55
Full Member
Posts: 220
Shag Leone, SL-1racing
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« Reply #38 on: September 18, 2013, 18:46:00 pm » |
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Are you using a chilled iron or steel billet cam?
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MeXX
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« Reply #39 on: September 18, 2013, 19:59:18 pm » |
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Are you using a chilled iron or steel billet cam?
Hi Shag I'm runnin' a chilled iron engle FK 47 that you can buy everywhere, combined with Thorsten Pieper Tool Steel Lifters. MeXX |
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kraftkaefer
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« Reply #40 on: September 27, 2013, 05:24:41 am » |
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Hallo MeXX,
hab Dir eine PN geschickt.
Gruß Stefan
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« Last Edit: September 27, 2013, 05:27:06 am by kraftkaefer »
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Typ3racing
Newbie
Posts: 41
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« Reply #41 on: October 04, 2013, 19:29:24 pm » |
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As I wanted to raise the compression ratio from 12.2 to 13.8
Bad Idea. So everytime the NOS kicks in the fatal result is another meltdown. |
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Jonny Grigg
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« Reply #42 on: October 05, 2013, 09:41:41 am » |
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As I wanted to raise the compression ratio from 12.2 to 13.8
Bad Idea. So everytime the NOS kicks in the fatal result is another meltdown. Dependant on the amount of N2O/fuel and ignition retard, of course. MeXX, how much retard do you dial on the gas? Also what "shot" are you putting in it? My motor has a 14:1 compression and nitrous, so am interested to know how you are approaching the same point- high compression and gas. Thanks, Jonny |
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No Compromise. O/FF111
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Jonny Grigg
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« Reply #43 on: October 05, 2013, 09:42:32 am » |
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Should mention I am using VP C23 fuel too  |
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No Compromise. O/FF111
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BeetleBug
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« Reply #45 on: October 28, 2013, 17:17:43 pm » |
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As I wanted to raise the compression ratio from 12.2 to 13.8
Bad Idea. So everytime the NOS kicks in the fatal result is another meltdown. I believe the cam choice will have something to say. Mexx is using a FK47 which is a cam that will build cylinder pressure quite low down where the nitrous is most effiecent. In other words, it is cruicial that he control the ignition and fuel. I used a small nitrous shot with a FK46 and did not retard the ignition. It was ok up to 70ish hp. I later changed to a FK89 and (did not change the CR) and never experienced any issues no matter what. Roar (N2O) here on The Lounge used a 135 shot with his 12.8 CR engine. -BB- |
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10.41 - 100ci - 1641ccm - 400hp
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russ fellows
Newbie
Posts: 23
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« Reply #46 on: October 30, 2013, 20:26:01 pm » |
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I broke my moldex one at 8000 revs on full boost in the same place. Which one are you replacing it with
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spoolin70
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« Reply #47 on: November 01, 2013, 18:41:10 pm » |
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Hi Mexx
Did you make your own Ti headstuds ?
If you didn't can I ask where they came from.
I'm in desperate need for some strong studs.
Thanks
Darren
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Shag55
Full Member
Posts: 220
Shag Leone, SL-1racing
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« Reply #48 on: November 01, 2013, 18:47:39 pm » |
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Race ware studs are the strongest. ARP or Bugpack are also pretty strong. Tai must be an expansion thing?
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spoolin70
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« Reply #49 on: November 01, 2013, 21:38:42 pm » |
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Thanks for the info Shag.
LNengineering don't sell the air-cooled ARP kit any longer.
ARP directly don't stock/make it and want $1000 to $1600 to make a set.
Raceware are out of stock, 2-3 months wait for the next batch.
Pierside is next, hoping they have some raceware in stock.
Although I am curious about Ti studs and how they expand with heat.
Mexx. Some of your work, especially page 1 would not look out of place in an art gallery. Exceptional work !
Thanks
Darren
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MeXX
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« Reply #50 on: July 09, 2014, 09:23:31 am » |
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Hi
As there are no races the next few weeks I found time to post the 2014 upgrades.
The new mill is V1.2 its basically the old engine with flat tappert FK 47 cam & Thorsten Pieper Tool Steel lifters
but with new 7-bolt Billet Cylinder housings and new Billet Heads.
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Heads ready 4 assembly
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to keep the interference between barrel and cylinderhousings right they were measured on a Zeiss Duramax
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Zeiss Duramax screenshot
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7th stud closeup
So long MeXX
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« Last Edit: July 09, 2014, 10:31:01 am by MeXX »
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MeXX
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« Reply #51 on: July 09, 2014, 09:37:11 am » |
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Cylinder ready for honing
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three step honing on a sunnen hone machine
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honing finished
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MeXX
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« Reply #52 on: July 09, 2014, 09:51:41 am » |
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Thanx to CP-Carrillo I got shorter rod bolts so notching the barrels is not necessary anymore.
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new short bolt vs old traditional design
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Rods an pistons assembled
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Cylinder assembled
MeXX
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« Last Edit: July 09, 2014, 19:09:36 pm by MeXX »
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MeXX
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« Reply #53 on: July 09, 2014, 10:11:42 am » |
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Springs are Isky Tool Room with Xceldyne Titanium retainers
Titanium valves from Del West and Xceldyne
Beryllium bronze valve shims
Valve locks are Del West titanium
Del West lash caps
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Andy Sykes
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« Reply #54 on: July 09, 2014, 11:55:56 am » |
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amazing work love it  |
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I love the haters they make me famous.
im building this not just putting parts together, they are two totally different things
Your only here once turn it up to 11
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MeXX
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« Reply #55 on: July 09, 2014, 12:25:25 pm » |
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Fiatdude
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« Reply #56 on: July 09, 2014, 14:57:10 pm » |
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Beautiful
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Fiat -- GONE Ovalholio -- GONE Ghia -- -- It's going Get lost for an evening or two -- http://selvedgeyard.com/Remember, as you travel the highway of life, For every mile of road, there is 2 miles of ditch |
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