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Search: Posts Made By: culberro
Forum: performance & modifications 08-17-2020, 02:22 PM
Replies: 30
Views: 2,800
Posted By culberro
Summit Racing also sells them, as does as a few...

Summit Racing also sells them, as does as a few suppliers on ebay. If you want to save some $$$.
Forum: performance & modifications 08-17-2020, 02:16 PM
Replies: 30
Views: 2,800
Posted By culberro
I told you they were expensive! Sizing note:...

I told you they were expensive!

Sizing note: Valve seat diameters are the OD of the seat. You want a valve seat OD that's ~ 1.5-2mm larger than your valve diameter.

So you'll want a 40mm and...
Forum: performance & modifications 08-17-2020, 01:54 PM
Replies: 30
Views: 2,800
Posted By culberro
If replacing both seats, and they overlap, you...

If replacing both seats, and they overlap, you want to install the intake first, and then the exhaust seats. This way, the exhaust seat has more surface area in contact with the head to conduct heat...
Forum: performance & modifications 08-01-2020, 11:27 AM
Replies: 30
Views: 2,800
Posted By culberro
Bronze seats will almost always be an upgrade...

Bronze seats will almost always be an upgrade worth doing, you just have to weigh it against the price.
Forum: performance & modifications 07-31-2020, 11:03 AM
Replies: 30
Views: 2,800
Posted By culberro
The Manley SS valves don’t need anything special,...

The Manley SS valves don’t need anything special, especially for a NA motor. That is unless you’re running a crazy cam and want a softer landing for the valves. But, bronze seats wouldn’t be a bad...
Forum: performance & modifications 07-30-2020, 08:18 PM
Replies: 30
Views: 2,800
Posted By culberro
Manganese-bronze 100%. SI Valve has b20...

Manganese-bronze 100%.

SI Valve has b20 sets last time I checked. Your Napa should be able to get them. If not, you can call them to order, or I can always order you a set as well.
The SI guides...
Forum: performance & modifications 07-30-2020, 06:49 PM
Replies: 30
Views: 2,800
Posted By culberro
It's hard to find the copper-beryllium material...

It's hard to find the copper-beryllium material these days, as you know... cancer causing and such. But the Killer Bee seats, AMPCO 45, and C630 (Kibblewhite machine sells these) are what I'd...
Forum: performance & modifications 07-30-2020, 06:07 PM
Replies: 30
Views: 2,800
Posted By culberro
See my edited response :) If you're doing...

See my edited response :)

If you're doing sustained high boost pulls, a powder metal seat that's meant for turbo/diesel applications or the AMPCO45 or C630 seats would be what I'd use.

Find a...
Forum: performance & modifications 07-30-2020, 05:56 PM
Replies: 30
Views: 2,800
Posted By culberro
Is this a boosted application? Does the head...

Is this a boosted application? Does the head already have seat inserts in it?
Either way, cast iron, chrome-moly, or harder powder metal seats for the inconel and SS will be fine. These should be...
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