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Search found 917 matches

by travis
Thu Dec 05, 2019 6:35 pm
Forum: Engine Tech
Topic: Valvoline VR1 for flat tappet cam break in?
Replies: 9
Views: 501

Valvoline VR1 for flat tappet cam break in?

I’m assuming VR1 by itself doesn’t have quite enough of the good stuff to break in a new flat tappet cam. The local parts store has a few ZDDP additives...2 I haven’t heard of before, but they also have Lucas ZDDP additive. Is this “enough” for a not very aggressive hydraulic flat tappet cam? Spring...
by travis
Mon Dec 02, 2019 4:30 pm
Forum: Engine Tech
Topic: Pressure recovery...am I understanding it correctly?
Replies: 3
Views: 405

Pressure recovery...am I understanding it correctly?

Comparing 2 heads exhaust port flow numbers...my sbf Promaxx 9175’s vs my barely ported 601 305 heads. The Promaxx heads have a 1.60 undercut stem valve, a short perfectly straight port with a “textbook” short turn, a short length, and a square exit that is obviously bigger than the 601’s. The 601’s...
by travis
Mon Dec 02, 2019 12:09 am
Forum: Engine Tech
Topic: 601 heads with light porting flow numbers
Replies: 5
Views: 233

Re: 601 heads with light porting flow numbers

travis, have you cc'd the ports?? interesting with undercut stem as i have 2 x sets of Dart heads here that dont like the undercut valve. I haven't cc'd them yet, although you can easily see that they are much bigger everywhere than any of the ford smogger stuff. I've read they typically run in the...
by travis
Sun Dec 01, 2019 11:59 pm
Forum: Engine Tech
Topic: 601 heads with light porting flow numbers
Replies: 5
Views: 233

601 heads with light porting flow numbers

This is a set of 601 casting 305 heads I've been dragging around with me forever. Stock 1.84/1.50 valves, 56cc chambers, amateur hour light bowl blend and general port cleanup, single angle 45* valve job. I've got about 2 hours in one head...time mostly spent cleaning out dirt dauber nests and spide...
by travis
Sat Nov 30, 2019 12:30 pm
Forum: Engine Tech
Topic: Weld or putty
Replies: 12
Views: 608

Re: Weld or putty

I would weld it. I’ve had several aluminum heads welded up over the years and never had any issues with them over long term use. Epoxy *may* be fine, but I wouldn’t trust it to last long term in that environment
by travis
Sat Nov 30, 2019 10:56 am
Forum: Engine Tech
Topic: Would this concern you?
Replies: 9
Views: 586

Re: Would this concern you?

Thanks guys. They will get a light surface cut and a “proper” valve job :lol:
by travis
Sat Nov 30, 2019 1:44 am
Forum: Engine Tech
Topic: Would this concern you?
Replies: 9
Views: 586

Would this concern you?

601 casting 305 head...it came off a flat top 350 out of a roundy round car that swallowed the air cleaner stud. That cylinders intake valve was bent slightly , and the pieces of the stud that made those 2 indention's was imbedded in the cast piston...but interestingly enough the piston wasn’t crack...
by travis
Tue Nov 26, 2019 7:06 pm
Forum: Engine Tech
Topic: Are these con rods worth saving?
Replies: 13
Views: 892

Are these con rods worth saving?

I tore down another 351w...standard bore but with a ton of miles on it. It was WELL worn... .014”+ of ring to piston clearance, pretty nasty ridge, etc. The rods concerned me a bit...the rod bearings look surprisingly decent for some 287k miles, but the inserts just fell out of the caps when I pulle...
by travis
Mon Nov 25, 2019 2:12 pm
Forum: Engine Tech
Topic: New distributor gear...no roll pin holes??
Replies: 22
Views: 890

Re: New distributor gear...no roll pin holes??

I’m not sure if their policy has changed, or what. All I could find on their site was a 90 day return policy, but on the phone they said up to 1 year. I know in the past I’ve returned things past the 1 year mark with no issues, but that was a few years back I just returned some stuff like that in a...
by travis
Sat Nov 23, 2019 5:30 pm
Forum: Engine Tech
Topic: What would you do if your motor was built like this?
Replies: 20
Views: 1478

Re: What would you do if your motor was built like this?

Last minute patch job, using whatever was available?
by travis
Sat Nov 23, 2019 1:50 am
Forum: Engine Tech
Topic: New distributor gear...no roll pin holes??
Replies: 22
Views: 890

Re: New distributor gear...no roll pin holes??

So...apparently since I purchased the gear over a year ago, Summit won’t stand behind it either. Looks like I’ll be taking my money elsewhere from now on :x I think it says 2yrs is the cut off on their FAQ return page or w/e I know I've returned unused stuff pretty dang close to 2yrs. Well after 90...
by travis
Sat Nov 23, 2019 1:38 am
Forum: Engine Tech
Topic: New distributor gear...no roll pin holes??
Replies: 22
Views: 890

Re: New distributor gear...no roll pin holes??

Thank you all for the info. Doesn’t seem like this should be too difficult. A couple of other questions. 1...this is a new stock replacement duraspark distributor. The roll pin that is in it isn’t the normal single thick walled split pin that I am familiar with. It looks like a really thin piece of ...
by travis
Fri Nov 22, 2019 6:06 pm
Forum: Engine Tech
Topic: New distributor gear...no roll pin holes??
Replies: 22
Views: 890

Re: New distributor gear...no roll pin holes??

Thanks Walter.

Comp said there should be one side drilled already, to use as a pilot hole. And apparently there was a large batch that missed QC.

Since no instructions or anything was provided with the gear, how do I determine the correct place to install it?
by travis
Fri Nov 22, 2019 5:25 pm
Forum: Engine Tech
Topic: New distributor gear...no roll pin holes??
Replies: 22
Views: 890

Re: New distributor gear...no roll pin holes??

So...apparently since I purchased the gear over a year ago, Summit won’t stand behind it either. Looks like I’ll be taking my money elsewhere from now on :x
by travis
Fri Nov 22, 2019 4:37 pm
Forum: Engine Tech
Topic: New distributor gear...no roll pin holes??
Replies: 22
Views: 890

Re: New distributor gear...no roll pin holes??

I called comp cams...some dude with a name I couldn’t pronounce simply said “you need to call Summit” and hung up on me :x