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Search found 571 matches

by BillK
Wed Sep 15, 2021 2:00 pm
Forum: Engine Tech
Topic: Valve Guide Clearance
Replies: 11
Views: 547

Re: Valve Guide Clearance

That one from PBM is the one I was looking at, the P5512. I'd be appreciative if you were able to measure one, although I think PBM will sell directly, if I remember correctly. I dont think PBM will sell to you if you dont have an account. I will put a couple on my next order and gladly measure the...
by BillK
Wed Sep 15, 2021 1:59 pm
Forum: Engine Tech
Topic: Valve Guide Clearance
Replies: 11
Views: 547

Re: Valve Guide Clearance

Walter R. Malik wrote: Tue Sep 14, 2021 8:32 pm Just curious ... what is the O.D. of an LS guide ...?
.500 -.501
by BillK
Mon Sep 13, 2021 4:12 pm
Forum: Engine Tech
Topic: Valve Guide Clearance
Replies: 11
Views: 547

Re: Valve Guide Clearance

I think you're right Bill. I've found some guides from a Jaguar that are the correct length, OD, and are a .312" ID, but I'd rather be around .309 when they go in so I can ream and hone or just hone, if they're close. I might just buy some bar and make some. They're not difficult, any machinist who...
by BillK
Mon Sep 13, 2021 1:42 pm
Forum: Engine Tech
Topic: Valve Guide Clearance
Replies: 11
Views: 547

Re: Valve Guide Clearance

Not sure who's guides Chris is selling. The ones I see in the PBM catalog are either .309, .310 or .3109 ? They don't really list one as being for the LS heads. I don't have one here to measure and I am not sure if they have somebody at the warehouse that can measure them that accurately. Part of th...
by BillK
Mon Sep 13, 2021 9:25 am
Forum: Engine Tech
Topic: Can a steel flywheel be machined?
Replies: 22
Views: 787

Re: Can a steel flywheel be machined?

AC, I cant see what it would hurt to try. The bigger the lathe the better and you need to figure a way to really clamp the flywheel in good or it will want to "ring" and give a terrible finish. The heat spots are going to give you the most trouble. I tried doing one once a long time ago when my flyw...
by BillK
Mon Sep 13, 2021 9:11 am
Forum: Engine Tech
Topic: Valve Guide Clearance
Replies: 11
Views: 547

Re: Valve Guide Clearance

Who's guides are you using ? What heads are they ? I just looked at a couple of manufacturers and all of the 5/16 guides they show are .509 id so you can size them wherever you want ?
by BillK
Sun Sep 12, 2021 7:21 pm
Forum: Engine Tech
Topic: Porting With an Electric Die Grinder
Replies: 26
Views: 1000

Re: Porting With an Electric Die Grinder

I have a Makita like the one in the video but to be honest with you I dont do that much "porting" A little port matching for gaskets and blending when installing larger valves but thats about it. My Makita is probably 30 years old and still going strong :)
by BillK
Sun Sep 12, 2021 7:18 pm
Forum: Engine Tech
Topic: Can a steel flywheel be machined?
Replies: 22
Views: 787

Re: Can a steel flywheel be machined?

As someone who's 'corrected' several jobs done previously on a 'dedicated flywheel grinder', I'm happy with the advice Just asking, because it has me wondering, how did they manage to screw it up? A flywheel grinder is probably the most simple-to-use, idiot-proof machine in the shop. Just thinking ...
by BillK
Fri Sep 10, 2021 10:58 am
Forum: Engine Tech
Topic: Hydraulic roller lifters tick only under crankcase vacuum
Replies: 31
Views: 1026

Re: Hydraulic roller lifters tick only under crankcase vacuum

Some interesting theories here. I have a hard time believing the vacuum is keeping the 35-50 lbs of oil pressure from feeding the lifters. But stranger things have happened :)

Just curious, have you asked Howards to see what they think ?
by BillK
Thu Sep 09, 2021 12:07 pm
Forum: Engine Tech
Topic: Hydraulic roller lifters tick only under crankcase vacuum
Replies: 31
Views: 1026

Re: Hydraulic roller lifters tick only under crankcase vacuum

Are you fairly certain that it is the lifters making the noise ? What kind of valve covers and how much clearance to the valve train ? I am thinking way outside of the box that the valve covers are flexing enough under vacuum to hit the rocker arms if the clearance is not much to begin with ? I just...
by BillK
Thu Aug 26, 2021 3:19 pm
Forum: Engine Tech
Topic: 70's era heads on a 1990 TBI block
Replies: 7
Views: 443

Re: 70's era heads on a 1990 TBI block

You can redrill the 4 center bolt holes on the TBI heads too. Or depending on the way the Pro Flo manifold is made you can just "modify" the 4 center holes a little and bolt it up also. Edelbrock used to sell little angled spacer washers to go under the four bolts to match the angles. I just looked ...
by BillK
Tue Aug 24, 2021 2:38 pm
Forum: Engine Tech
Topic: Toyota 2jz gte con rod small end id
Replies: 2
Views: 194

Re: Toyota 2jz gte con rod small end id

The best I could do is come up with the od of the rod bushing which is .9546 ? Dont know if there is enough meat on the rod to put a bushing in for a .927 pin or not.
by BillK
Tue Aug 24, 2021 11:05 am
Forum: Engine Tech
Topic: And now for something completely different…Kubota engine swap
Replies: 5
Views: 360

Re: And now for something completely different…Kubota engine swap

Most of those little diesels run at fairly low rpm compared to a gas engine but make a ton of torque. It think you are going to have a hard time finding a gas engine to match the diesel specs in that regard. And I am sure the drive was designed with the diesel specs in mind.
by BillK
Tue Aug 24, 2021 6:45 am
Forum: Engine Tech
Topic: Crankshaft?
Replies: 8
Views: 759

Re: Crankshaft?

blue, A bunch of years ago I did a Hobby Stock type engine for a customer that raced mostly at Potomac Speedway here in Southern Maryland. Sounds like a very similar track as what you are on. Engine was almost identical to what you are working with. They ran the car for 3 seasons before we even fres...
by BillK
Mon Aug 23, 2021 6:45 am
Forum: Engine Tech
Topic: Want to make more power from 355 SBC
Replies: 47
Views: 2427

Re: Want to make more power from 355 SBC

Have no idea on either. Wilson, I dont know where you are located but the first thing I would do is find a local shop with a chassis dyno and spend a couple of hundred bucks getting some baseline figures on what power you have now. Your idea of "Car runs really strong now." might be totally differe...