mustangfan123

I was on another forum today and there was a post where someone was asking,"Has anyone checked to see if the 1mm valve upgrade increases piston to valve clearance issues if you run a aftermarket cam as the valve pocket may not be over sized enough for it?"
Is this statement true,or is it just a theory? If it is true,could there be ways around this?

I am planning on doing Stg. 3 Comp Cams and Cylinder Heads with 1mm oversize valves,and since I found this, I wanted to make sure I wouldn't run into any problems with this combo.

Every_Mn

How many inches is 1mm? Because in America, we use the Imperial system. Metric, on the other hand is traditionally used by commies, *****, and terrorists.

Anyway, according to Google 1mm is a tiny fraction of an inch... so I don't see how there'd be a problem. Forgive me, I know little of metric OR the Ford mod motors.

ov3n

I don't know if you're trying to be funny, or if you're the most ignorant person on the planet. *hides*

Every_Mn

Trying to be funny. Sorry, I stepped out of line, but I cherish any chance to use my classic ignorant neocon line.

BACK ON TOPIC, FOLKS! Please.

ov3n

I'm all for stepping out of line, I just wasn't sure.

Anywho. Sorry for the thread hijack.

94tbird

you will be fine. im having my engine built right now with the BBR Stage 2 Blower cams, Livernois Stage 3 Heads with 1mm oversized valves.

believe half of what you see and nothing of what you hear

mustangfan123

Good point. But anyway, here is the thread I was looking at:

JDM Heads - worth it? - ModularFords.com
Read post #25 and #26. That is what I was wondering about.

94tbird

personally i wouldnt touch JDM, especially on the subject of heads. the problem was with JDM's heads, not with all heads in general

mustangfan123

I wasn't going to buy their heads though,I was thinking about Tillmanspeed's stage 2 heads with 1mm oversize valves. I didn't know it was just a JDM cylinder head problem. Thanks.

TillmanSpeed

I wouldn't get too caught up into fitment issues, etc. If you're just upgrading the top end, and you go with the right shop and/or manufacturer... it will be machined for correct clearances.

I have practically 1000 references for the machine work we've done and motor's we've built over the years. I would be glad to provide them before any sale.

I will have a full sheet on our stage 1 heads very soon, I'm just awaiting our build sheet back, as well I'd like to take pictures Monday when I'm in the office.

CR
Tillman Speed
610-497-3711

94tbird

how do your heads compare to say the livernois heads of various stages? any striking differences or are they relatively similar?

TillmanSpeed

Very very similar... I mean what's done is the most common upgrades for 281 heads.

1mm stainless oversized valves
typical valve job
new valve springs for higher lift camshafts
everything is complete CNC machined
new bronze valve guides
hot tanked, pressure checked, everything cleaned
new retainers, locks, and valve seals (OE)

This is our stage 2 head... we just did these for a guy last week, and I'm going to post specs on them. I have to get them over to the flowbench this week to get exact specifications. We've done these quite a few times for 4v guys as well. Everything comes assembled and ready to drop back in. We too charge the same going rate for core charge as livernois, and many others... $1000 refunded on inspection.

CR
Tillman Speed

mustangfan123

Would I run into any problems with your stg. 2 heads and comp cam stg. 3's?

mustangfan123

Also, when you mean core charge, does that mean I have to send 800$ to you so you can buy a stock set of cylinder heads to do the porting work on if I don't send in my stock ones?

TillmanSpeed

Same as the rest of the companies out there... 3V heads are expensive.... you send your heads out, and when we get them and inspect them to make sure they can be used, we refund your $1000. Correct you are.

A stage 3 comp cam would be perfect. We also have custom grinds available. I'll let you know how our new custom grind works out once it's installed and tuned.

CR

mustangfan123

Will you have dyno's of before and after on your stage 2 head?

94tbird

actually Livernois is 800 core, refunded upon getting your heads to them

id liek to see some specs and prices if you dont mind

mustangfan123

Well the only thing I know so far is tillmanspeed's stage 2 heads are $2415 shipped!!! Not bad when you compare them(which are almost exactly the same specs) to livernois's stage 3 heads that are $2695 without shipping.

JRay05stang

seriously why not just build up the internals and add a supercharger to ur parents car kid... ur gonna spend so much money goin the n/a way and not get near the bang a supercharger would get you...

Trooper4985

How about throwing a blower on top of the PP heads for even better flow?