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ReaperMans Old Holden & Mechanical Channel
Добавлен 13 июл 2020
Holden 202 Valve Stem Guide Seat Cutting For Viton Seals
This will show you how to cut Holden 202 valve stem guide seats to fit modern day seals.
Head valves are typically of 11/32" in size, so this may be the arbor you'll want. Common cutter tool size is 0.530". Make sure you get a set of vrenier calipers and do your measurements before proceeding. Advantages of having this mod done is longevity of the valve stem rubbers, which will mean your engine isn't likely to burn excessive oil and foul up plugs etc, through too much oil bypassing through the valve stem guides.
Head valves are typically of 11/32" in size, so this may be the arbor you'll want. Common cutter tool size is 0.530". Make sure you get a set of vrenier calipers and do your measurements before proceeding. Advantages of having this mod done is longevity of the valve stem rubbers, which will mean your engine isn't likely to burn excessive oil and foul up plugs etc, through too much oil bypassing through the valve stem guides.
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Видео
20200714 1614341
Просмотров 2074 года назад
Holden TF Rodeo running a Holden 3.3/202 motor and trimatic auto gearbox from a VH commodore. Motor is 60thou oversize with ACL Duralite HQ Racing pistons and running a tow cam. Carbie is just a stromberg single-barrel from a 200ci xy falcon pursuit motor. Head is from a 186 HK Kingswood, serviced and running superb. This bus purrs like a kitten, and delivers better economy than the original mo...
VK Commodore Wagon With Weber 34
Просмотров 1,9 тыс.4 года назад
My 1985 Holden VK Commodore Wagon. Factory 3.23 LSD, Factory 4-speed torquemaster. Running a HQ 202 Red Block at 40thou oversize, with ACL Duralite HQ Racing High Compression Pistons. Decked block for zero height clearance. Running a rather large custom cam, Commodore sump, 12-port VH Commodore 2.8/173 Closed Chamber head for high compression and lotsa low-down torque with good torque curve. Ha...
Does this reduce the valve guide height to? Just wondering if this mod will help my clearance with a high lift cam on a 173 head,,, realise this vid is old but I can only ask, cheers
yes, this tool can and will allow you to cut down the top of the valve stem guide enough for you to easily run a high lift cam. I've done this with a .550thou cam no worries.
@@reapermansoldholdensixmech8675 solid mate!!! Appreciate that info
@@davidhole8229 You're most welcome. No dramas.
outstanding! I'm purchasing the same cutting tool and arbor, next month. do it yourself.👍
308/253 exactly the same
Hey mate, thanks for the share 👍 Sounds like a nice strong motor, the 12 ports are great for torque and especially with the standard manifold to with the even runner lengths 👌 nice combo. Would you mind to share your cam specs?
It is a real beauty, and I am still using this as my daily. The cam is an unknown that I pulled out of a worked red motor sometime ago. I had done some measurements awhile ago with a set of vernier callipers, and worked out the lobes are giving around 420thou lift at their peaks. So, somewhat of a nice mild cam. I tried to find what cam manufacturer made this, and a lot of old hands said it was an old speco blueprint cam of some description. The long duration gives some lope. I had changed the weber 34adm over to a weber 38 dgms. Is a much better carburetor yet again.
@@reapermansoldholdensixmech8675 awesome thanks for the reply, this is a very similar set-up I'm wanting to build myself for my hr. I'll be chasing torque and throttle response. 😁👍🍻
@@jalopyjalopy9489 I've done quite a few over the years, a high torque cam is what you'll be wanting, high compression pistons and if you can get one, get a high compression/closed port head from a 2.8 blue vc/vh commodore motor. I, right now, am building another one just like this and will be experimenting with an EFI setup. I've got most of the bits now after scrounging around the last few weeks, and have a nice block and crank to work with. I've got a 3.3 vb commie red block at 20 thou, and using a vk commodore counterweighted crank. waiting on 20thou flat top pistons and molly rings. I'm looking forward to see what it does. Also, I had gone from a weber 34adm to a weber 38dgms. The engine runs better still.
@@ForIndigenousRightsTas yeah cheers mate, that's exactly what I'm chasing at the moment is a 12 port high comp head and yeah a torque cam with low duration and high lift. Thinking to go around 220 to 230 @50 with as much lift as I can get with that duration, 450 to 480 lift roughly.. Your motor sounds nice and tuff, are you building it yourself? You'll have to keep us posted with ya build when you take her out for a spin. Good luck with it mate 👍👌
great video, really helped me out, thanks
You're welcome. I am glad it was of assistance to you
Great idea! Thanks
Thanks for sharing I'm in the process of refreshing a motor and do have a drill press your video came in handy, my brother lives down your way little town Perth he tells me always some things you can't get like you get in Melbourne down there cheers
Ah yes, Perth. Perth is about 30mins north of where I am living now. And we don't have good access to engine machinists anymore here. Right now, if a motor needs a bore out, it's cheaper to get it done interstate and sent down, and prob be at a better quality finish also
What a clever modification, just came across this video. I worked on a lot of Holden Red (and grey) motors in the 60's and early 70's and always thought the valve stem oil seals were too minimal. They hardly do anything but there was no alternative in those days.
Great, the seals will last possibly 400 thousand K or more.
that was my thoughts exactly! Was so tired of the factory rubber band seals not lasting.
Literally the most trouble free holden 6 i had to date. smooth running bus that had no dramas pulling a load. super reliable.
Had a laugh at the carby description, it fits nicely in there length wise too.
@@wobblyplanks Haha. yeah, just a single barrel ford carbie I had. Looked at the listing number on the carbie body to figure what it was. was sitting with random junk in my shed, and thought damn, that'd be a good match. it was, and had served it quite well. Eventually swapped that system over to the proverbial 350 holley and it delievered a lot more grunt still. The engine was an incredibly good fit, and didn't take much to make this work. gearbox mounts were in the right place and all I had to do was raise the mount up a few inches with some box steel. motor mounts had to go back about an inch or so from memory. Heater hoses from firewall was on the right side too. Was quite easy overall to get this thing running in there, and the only single downfall was having the trimatic behind it which used to fair wind its guts out at 100kph. It'd do around 3600RPM or so. If I had the chance to do another auto one again, I'd move over to a t700 conversion, so it has overdrive. Amazing the pull this thing has though. Pulled a vx commodore wagon wreck out of the mud from my yard to the road at around 50 meters away with no tyres on the thing. It was quite a good conversion. I would certainly do it again
I ran the same carby for yrs on my warm 202, was awesome on fuel on the highway, around town wasnt to bad either
I'm fond of it that's for sure. I've since changed over to triple 2" su carbies, but I'm not 100% sold on the redline triple su manifold damn near touching the extractors. I'm actually going to go back to the weber 34, but will be running on an aussiespeed 12 port manifold which I've now got on the way. The weber 34 was running very well.
Great video mate and very informative 👍🏻
Thanks mate :)
All you had to do was take the baffle out of the standard press steel rocker cover and problem solved !
First thing I investigated. Won't fit or hold in there without some work,.
Please do use a drill press to do this and also make a jib frame for the head to the valve stem guide hole is dead vertical. comp cams etc state you can do this by hand with a drill, but I did test that method on another and found that the seals of the standard diameter I was using for the valve seat were too loose. Had since cut that head sat guides the next size down on a jib frame and worked out just fine. My next challenge when I can afford it will be come up with the cash to purchase valve stem guide replacement tools and show how that is done.
I think that the 3.36:1 diff ratio was standard in the VK Commodores but the 3.23:1 diff ratio was an option !
Could be mate. I haven't looked into it though. The old girl used to sit at a fair warm idle travelling along the highway at 110kph. I've since swapped out the 14" mags for 15" vx ones and had also installed a factory 5 speed gearbox. I've got a spare just incase that one decides to die at any stage.
Awesome video .
Thanks mate! :) Also found that you can get umbrella seals from f*rd 351 motors that'll fit these 11/32 valves and even those are still superior to the traditional black rubber band seals that tend to be rather sensitive.
Great job mate. Sounds great. Thats a loppy cam alright, I like the belt pully system you made as well.
Thanks mate! Man that engine pulled incredibly well for awhile. Silly me for not running it in carefully before giving it maybe a little too much hell. Needless to say, I'd busted a piston ring in the process and got quite some excessive blow by. I'd since switched motors to a 3.3 black and also installed a new yella terra alloy head along with a set of triple 2" SU carbies. It's running quite nicely and I'm now being a bit more reserved with the old girl. That weber carbie was running quite well and I've also since picked up a couple more to re-jet and play around with over the upcoming summer if I get the chance. Also have 3-4 more holden sixes I'm looking to slap together over that time.
Thanks kindly. it has done it's job well. I still use this old wagon on a regular basis.
Awesome work mate! Where abouts do you get the tool head from and what specs?
Thanks mate! :) Comp cams make the arbor/guides and the cutter tool. Arbor size is 11/32, part number 4732. and the cutter is to cut seats to 0.530, and can be purchased from here: www.compcams.com/valve-guide-cutter-530-for-standard-ptfe-seals.html. Viton valve stem seals can be bought from many places, but I'd bought a set of v8 ones from ebay that did the job rather nicely. A lot cheaper than buying a set to suit the holden six, and have some spares to go with it.