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Search found 1999 matches

by KnightEngines
Mon Nov 11, 2019 10:59 pm
Forum: Engine Tech
Topic: Fontana midget - MLS head gasket?
Replies: 8
Views: 498

Re: Fontana midget - MLS head gasket?

Not having much luck with this.

This particular engine runs the Fontana head, the bolt pattern is neither chev nor Windsor, looks like it's chevy 2 bolt pattern.
Mls head gaskets for a chevy 2 with 4.06" bore seem to be thin on the ground....
by KnightEngines
Sat Nov 09, 2019 2:59 am
Forum: Engine Tech
Topic: Fontana midget - MLS head gasket?
Replies: 8
Views: 498

Re: Fontana midget - MLS head gasket?

midnightbluS10 wrote:
Sat Nov 09, 2019 1:11 am
Is it the 'Tasmanian Devil' or whatever that engine is that they developed that's based on the Chevy II engine?

cylinder head

https://www.hotrod.com/articles/0808sr-tasmanian-devil/
Yep, that's the one!
by KnightEngines
Fri Nov 08, 2019 6:25 pm
Forum: Engine Tech
Topic: Fontana midget - MLS head gasket?
Replies: 8
Views: 498

Re: Fontana midget - MLS head gasket?

I ran Gaerte blocks but I believe the Fontana is basically a Chevy II. The original head back in the late 70's/early 80's was Australian, I remember Bud Meyer building one with a Chevy II block and setting a few records in boat racing. Turns out I actually know the guy that did the port design for ...
by KnightEngines
Fri Nov 08, 2019 1:28 am
Forum: Engine Tech
Topic: another balance question
Replies: 11
Views: 613

Re: another balance question

I put pistons that were 45g heavier in a motor without a rebalance.
It turns 8200rpm & looks mint on pull down.

Just run it, you'll never know the difference.
by KnightEngines
Thu Nov 07, 2019 6:51 pm
Forum: Engine Tech
Topic: Fontana midget - MLS head gasket?
Replies: 8
Views: 498

Fontana midget - MLS head gasket?

Got a little Fontana midget speedway engine in, head needs resurfacing, if possible I want to switch to MLS head gasket instead of copper.

Does anyone know if they're available for these engines?

Head is like SB2.2 valve layout, but non cross flow.
by KnightEngines
Thu Oct 31, 2019 1:04 am
Forum: Engine Tech
Topic: Switching from 45 to 50 deg seats - done some testing
Replies: 22
Views: 1745

Re: Switching from 45 to 50 deg seats - done some testing

It'll be a lot lighter soon, those 2 passes it had the spare, stereo equipment inc sub & amp & even the factory tool kit & jack in it, along with full exhaust system etc.

Last I heard it was below 3400lb now.
by KnightEngines
Wed Oct 30, 2019 10:31 pm
Forum: Engine Tech
Topic: Switching from 45 to 50 deg seats - done some testing
Replies: 22
Views: 1745

Re: Switching from 45 to 50 deg seats - done some testing

What car? What doe's it weigh? What times and mph in 1/4? Vs SS commo in street trim, irs rear, only 2x shakedown passes before the track closed, back out soon. Weight was something like 3800lb, maybe heavier, it'll be lighter next time out. Ran mid 10 @ around 128mph or thereabouts from memory, sh...
by KnightEngines
Wed Oct 30, 2019 5:52 pm
Forum: Engine Tech
Topic: Switching from 45 to 50 deg seats - done some testing
Replies: 22
Views: 1745

Re: Switching from 45 to 50 deg seats - done some testing

Yeah, I had an aggressive 45 seat in there that behaves pretty close to a 50, 38/45/65/80 with a big throat. Gone to 45/50/65/85 with similar throat. You've done reverse-flow testing w/ that 45* seat config vs a "less aggressive" 45* seat config? If so, anything you could post? Thanks - Brad No, I ...
by KnightEngines
Wed Oct 30, 2019 7:41 am
Forum: Engine Tech
Topic: 4-71 Blower on a 350 SB Questions...
Replies: 18
Views: 583

Re: 4-71 Blower on a 350 SB Questions...

There is some not so great info posted in this thread. Shoot me a pm & I'll give you my number to call me, you can make quite a lot more power but sticking a bigger carb on it is not gonna get you much. Little blower spinning hard = heat, which will cost more power than it gives & push you further f...
by KnightEngines
Wed Oct 30, 2019 7:36 am
Forum: Engine Tech
Topic: Switching from 45 to 50 deg seats - done some testing
Replies: 22
Views: 1745

Re: Switching from 45 to 50 deg seats - done some testing

I've got it, but I still default to the older version, it's quicker & tells me what I need to know in 2 minutes, the rest just sorta fills itself in once you've built enough of the same type of engine that you don't have to think about it other than to make it do something a little different to othe...
by KnightEngines
Wed Oct 30, 2019 1:33 am
Forum: Engine Tech
Topic: Switching from 45 to 50 deg seats - done some testing
Replies: 22
Views: 1745

Re: Switching from 45 to 50 deg seats - done some testing

I don't have the actual valves yet, still about a week away. When I get them I'll start on the actual heads with before & after flow tests. My main aim was to see what we could gain given the bowls are pretty much maxed out already, there is not enough metal to reliably go to a larger throat so I wa...
by KnightEngines
Tue Oct 29, 2019 9:43 pm
Forum: Engine Tech
Topic: Switching from 45 to 50 deg seats - done some testing
Replies: 22
Views: 1745

Re: Switching from 45 to 50 deg seats - done some testing

Yeah, I had an aggressive 45 seat in there that behaves pretty close to a 50, 38/45/65/80 with a big throat. Gone to 45/50/65/85 with similar throat.

We're doing the 1.8 ratio jesel rockers, which will take it from .700" lift to .800".
We'll also be trying ETS Z85 fuel.
by KnightEngines
Tue Oct 29, 2019 5:53 pm
Forum: Engine Tech
Topic: Switching from 45 to 50 deg seats - done some testing
Replies: 22
Views: 1745

Re: Switching from 45 to 50 deg seats - done some testing

Gary - it's not going to be a back to back 45 vs 50 test, it's r&d prep to step up an existing race motor. I gained 7cfm at .700", that will translate to at least 10hp on this motor. I'm looking for small gains in a bunch of places to add up to a significant gain. When you're at 640hp from 355 cubes...
by KnightEngines
Mon Oct 28, 2019 7:48 am
Forum: Engine Tech
Topic: Switching from 45 to 50 deg seats - done some testing
Replies: 22
Views: 1745

Re: Switching from 45 to 50 deg seats - done some testing

Hey Tony, Is that the 355 with VN heads?? 12.7:1 compression 268/274 -109 solid roller 490 ft/lbs @ 5600 636 hp @ 7600 1.38 ft/lbs per cube 1.79 hp per cube I am interested in these upgrades Do you think the engine is capable of 1.4 plus ft/lbs or will you just be pushing current peak up higher to ...
by KnightEngines
Mon Oct 28, 2019 1:13 am
Forum: Engine Tech
Topic: Switching from 45 to 50 deg seats - done some testing
Replies: 22
Views: 1745

Switching from 45 to 50 deg seats - done some testing

Got a rework of an engine I build a while back coming up, it's a 355 holden making around 640hp on E85, we want to squeeze it up to around 670-680hp. Part of that will be reworking the heads, they currently have aggressive 45 deg seats, I plan to recut them to 50 deg as well as go from 11/32 stem st...