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  • ColeB
    Moderator
    Post count: 1838

    93218497-0A63-45ED-AC1F-32D43A3A6E406FD11194-13A7-4C54-86C0-F863A992B317BE0D48C5-04CE-42DE-9F0F-F5844DF2F9883CF48343-2FE8-4EE9-BC98-96D2A5BAE7D53F9F08E7-D201-445A-85A1-B19C1FA0F1210106D58A-4D27-4DBB-BD85-7372D83381CAE6563E11-2427-448C-8287-F03097A29F874554D78C-FE03-4598-A995-A60CB7524D30E336A9EB-50F2-4265-A45F-42121C3D45882822F4E0-434A-41E0-863D-60A0BC7E9AE1DB86CA36-E441-4ADC-A307-89158BA1BDCCDB3AE933-36F1-43DD-BD2A-D5226DC9D072C5222E84-0ADB-4764-8CE1-4039E1AA27BBBeen working on some things the last two weeks. Rebuilt this 25 hp for kb’s 51 bus(AB51 as some know it). It was filling the case up with gas… low compression. Needed a refresh.

    ended up seeing that the rings were all glazed. Gas was probably just going by after they lost their compression. I got the carb re-bushed as well  by Ed Fall(vintage Werks) who is local up here now. After his rebuild the carb was still acting up. Found out the needle seat wasn’t working. Put in a nos one and it fixed the richness issues. Previously, before the rebuild; I bet the bowl in the carb was just over filling and dumping fuel into the cylinders. I checked the fuel pump to see if the diaphragm had a hole, but it didn’t seem to. It was holding pressure. So I bet too much gas from the carb was washing out the cylinders and glazing the rings. This allowed that extra fuel to get into the oil. Seems to be better after the rebuild.

    I put the motor back together with an NOS cam, NOS p’s and c’s set, NOS rings, NOS lifters/pushrods, etc.  Feel pretty good about how it is set up. Seems to run well even without an accelerator pump. I’m happy.

    mtnbus
    Participant
    Post count: 1232

    Damn Cole ! Its been a while.

    seems like you’ve been busy surrounding yourself with cool stuff! Great work

     

    theres a good chance Ill be up that way late summer.

    ColeB
    Moderator
    Post count: 1838

    8CEE43D0-FB87-4B07-957B-3DCE8FB726AE091D4FA2-18CB-41B5-A812-21703FD957B86D785F58-F537-4119-8BEB-B26F33D9068C1BD47F80-E1C0-4B45-B12D-E27EF376558D00807E30-BC13-4B15-B3BC-3F6DB0C9013263D96877-7EFE-459D-9E67-C726F4F785AE0A1DCB2F-2828-4F74-98EE-236BF0DF75B0A3B8A940-E303-42F8-8990-0B2B4A67E61A7093E0E9-3BAE-4A85-B761-EA2D96A20941327DDF2E-64CF-4AFE-8D71-C9E87AADCCEBE29A1270-404A-404C-AD1B-403765D6636FAB3D68D4-C575-47AD-9903-44F8500E3F9B5FFD81ED-2EA2-472A-9DAE-6F8B3A17120ABB53E3BC-6AAE-4DB8-8292-019D941326F524E002DC-6486-4C2E-A0A0-FEB59C4E444731710253-E33A-4769-865D-706E2BFD91290352680E-7D5C-4D84-91C9-48B0A714A3BAI also have been going through this 1970 911S in a rare Leaf Green for kb. This car just came from Zurich. It definitely was a collectors car… not a drivers car. So I’m setting it straight. Beautiful paint, original interior, beautiful car! But the motor was a bit lacking, brakes pulsed, motor looked ugly. So I’ve been fixing that. Pulled motor and trans. It needed a timing chain tensioner update. The early 911’s had a set of pneumatic tensioners for the timing chains. The later cars had oil pressure fed units. The new units don’t fail as catastrophically. So I made the switch. The tin was all rattle canned. So I pulled it off and had it powder coated. Looks a lot better. New hardware on a lot of stuff. 911 yellow zinc plated stuff is a nice touch. New rotors and pads all around. The old rotors had already been turned. So I got new ones. New CV’s going in. New tie rod update. The early 911’s had a u joint style tie rod. The later turbo cars had a lot stronger and better handling kind of ball joint style tie rods. They seem to be a lot stronger and have better feedback while driving. I updated to the turbo ones. I’ve also had to go through the MFI system a bit. The previous owner had it all wonky. Should be better now. The intake manifolds had a lot of corrosion. I cleaned them up and put new seals everywhere. New fluids, new plugs, new belt, adjusted valves, new clutch, new oil lines, new fuel lines, new sway bar bushings,  etc etc… did about everything and checked everything I could without tearing the long block down. Waiting for the velocity stacks to come back from plating and the oil tank to come back from being cleaned and re coated and then I’ll be doing the final testing and tune! excited how this one is coming out!

    Franz
    Keymaster
    Post count: 3797

    I like he color! That’s going to be sweet when you get done with the master tune up.

    jp
    Participant
    Post count: 318

    Nice work on the longhood!

    Willy
    Moderator
    Post count: 1210

    Love that leaf green!

    Pat K
    Keymaster
    Post count: 1513

    Nice Cole!! You have built up quite the skill set over the last couple years. Keep at it bro!!

    We will build it if it comes.

    ColeB
    Moderator
    Post count: 1838

    Thanks guys! Ya Pat, I love learning. Excited to keep learning. So much to learn!

    Baja Mark
    Participant
    Post count: 451

    Nice work Cole 👏🏼👏🏼

    volksaddict
    Participant
    Post count: 647

    Nice stuff to work on Cole! Way cool. That 911 should be fun.

    How do you guys keep all that stuff drivable? 🙂

     

    ColeB
    Moderator
    Post count: 1838

    It’s harder than you’d think… especially when I’m not around much. When I was down at KB’s for quarantine I basically worked a full time gig just working on his motorcycles and cars.

    we did set up a big battery tender bank With like 25 stations that plugs into all the cars. That helps a lot. Most of the time it’s a dead battery that will mess up your cruise plans. But when I’m not there kb and my brothers cycle through driving things to and from work or to lunch etc. that helps keep gas from going bad (we also have ethanol free in everything which helps) and helps us keep an eye on how everything is running.

    volksaddict
    Participant
    Post count: 647

    I know Cole, believe me. batteries, fuel lines, pumps, carbs… That’s why I commented. Yes on ethanol free and stabil.

     

    John Jones
    Keymaster
    Post count: 7082

    Cole, your a bad ass😁

    ColeB
    Moderator
    Post count: 1838

    Thanks JJ! Haha but I don’t know about that. You’re the badass…!

    im still waiting for parts… holiday and covid has slowed everything down… since I’m waiting I started in on this 2.4 build. It’ll actually be a 2.7. But originally came out of a 2.4 car.

    B1E1FFAD-03E9-409C-B37D-3E9E4BD3A5619B44BAC0-CF94-4D48-8238-9FD8455D1749B628C213-39CA-4E9E-AB04-82CB179F953BI also am replacing a 2nd gear out of a 356C. I didn’t notice much noise during the test drive. But the customer is very persistent…. 🙃 I actually liked how it sounded. More like a race car haha. But I tore it down yesterday. Everything looks great. No wear on anything as I expected. Just going to quickly switch to another 2nd gear and it should be good to go back together  4B607A2C-BA6F-4766-9B06-852F929D0BAF

    Franz
    Keymaster
    Post count: 3797

    I didn’t notice much noise during the test drive. But the customer is very persistent….

    It sounds like you are working for Jesse? HAHA….He has a noisy transaxle too.  Its just the gear mesh like you are dealing with. But what else can you do except take everything apart?!

    Dario
    Participant
    Post count: 547

    Make sure the wipers are at the perfect degree… !!!

    Franz
    Keymaster
    Post count: 3797

    The motor/transaxe mounts can transmit a lot of noise too. That is the problem with Jesse’s … It has a solid nose cone mount.

    Willy
    Moderator
    Post count: 1210

    Let’s not pretend like buses are quiet either! If you want a quiet car get a Tesla!

    John Jones
    Keymaster
    Post count: 7082

    Let’s not pretend like buses are quiet either! If you want a quiet car get a Tesla!

    No shit huh!!!!!!!!!!!! 😎

    ColeB
    Moderator
    Post count: 1838

    Ya, the mounts seem fresh. Just a weird rare thing when the gears were cut together… I guess they just don’t like each other quite yet. The other problem is this thing has like 500 miles since it was restored… most Porsche people don’t drive their cars… so with only 500 miles the trans probably hasn’t even broken in yet! Takes a while for everything in the motor and trans to meet each other and start working together. Seems like around 2k miles?

    but the customer wants it apart… so its apart… haha!

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