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Molnar vs K1 vs compstar crank and rods

General engine tech -- Drag Racing to Circle Track

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Mikej26
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Molnar vs K1 vs compstar crank and rods

Post by Mikej26 » Wed Jan 15, 2020 7:00 pm

Been shopping around looking for different components for a 400+ sbc.

Have stumbled across what seems to be a pretty good deal through summit racing that is a Dart SHP 4.125 bore block with a K1 3.75” crank and K1 6” rods with Wiseco protru pistons.

I know that Tom Molnar formerly owned K1 and I know that his current product under his own name is high quality. Is the current K1 product the same design and quality as it once was? Is it essentially the same product that he sells under his name now?

Lastly in a recent thread I made comparing different strokes with a 4.125 base bore, I saw many people mentioned Compstar rods and I’m assuming cranks to go with them. How do these stack up against the K1 or Molnar pieces?

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Re: Molnar vs K1 vs compstar crank and rods

Post by Orr89rocz » Wed Jan 15, 2020 9:24 pm

Compstar is good stuff. K1 is also good stuff, especially the lsx stuff for the money. Both have held much more hp than anyone would have thought in turbo combos

Molnar might have made some design changes here and there, but not sure but his stuff is also good. Wouldn’t hesitate to run any of these

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Re: Molnar vs K1 vs compstar crank and rods

Post by Mikej26 » Wed Jan 15, 2020 10:48 pm

Is it safe to say that any of them are a cut above Eagle or Scat? Obviously every manufacturer has a spectrum from entry level items to the top of their lines, but generally speaking are the 3 I mentioned in a different tier than scat or eagle?
Last edited by Mikej26 on Wed Jan 15, 2020 11:40 pm, edited 1 time in total.

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Re: Molnar vs K1 vs compstar crank and rods

Post by Mark O'Neal » Wed Jan 15, 2020 11:29 pm

Mikej26 wrote:
Wed Jan 15, 2020 10:48 pm
Is it safe to say that any of them are a cut above Eagle or Scat? Obviously every manufacturer has a spectrum from entry level items to the top of their lines, but generally speaking are the 3 I mentioned in a different tier that scat or eagle?
Yes.

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Re: Molnar vs K1 vs compstar crank and rods

Post by midnightbluS10 » Thu Jan 16, 2020 5:56 am

Afaik, some of Molnars stuff is imported. It's not all made in USA. Their entry level stuff specifically is imported, as I recall.
JC -

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Re: Molnar vs K1 vs compstar crank and rods

Post by BLOCKMAN » Thu Jan 16, 2020 8:33 am

Mikej26 wrote:
Wed Jan 15, 2020 7:00 pm
Been shopping around looking for different components for a 400+ sbc.

Have stumbled across what seems to be a pretty good deal through summit racing that is a Dart SHP 4.125 bore block with a K1 3.75” crank and K1 6” rods with Wiseco protru pistons.

I know that Tom Molnar formerly owned K1 and I know that his current product under his own name is high quality. Is the current K1 product the same design and quality as it once was? Is it essentially the same product that he sells under his name now?

Lastly in a recent thread I made comparing different strokes with a 4.125 base bore, I saw many people mentioned Compstar rods and I’m assuming cranks to go with them. How do these stack up against the K1 or Molnar pieces?
On 3.750 stroke rods I am kind of partial to the Callies Compstar rods They plenty of cam to rod clearance no need for a reduced base circle cam.

Crankshafts I am Partial to the Callies cranks and have used the Molnar line and also have used the cranks from Liberty Performance which is the same crank Manley Performance sells.

If your looking at pistons I would look at the Mahle Power Pack piston they have a 1MM 1MM 2MM ring pack Very nice pistons.

If your looking for a block I sell that block all machined to your spec for 1975.00 Shipping in the U.S. is 125.00 I would up grade to main studs.
Here is a link to my page
http://hinksonautomotive-cncblocks.com/products/

Good luck what ever way you go.

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Re: Molnar vs K1 vs compstar crank and rods

Post by Mikej26 » Thu Jan 16, 2020 11:17 am

BLOCKMAN wrote:
Thu Jan 16, 2020 8:33 am
Mikej26 wrote:
Wed Jan 15, 2020 7:00 pm
Been shopping around looking for different components for a 400+ sbc.

Have stumbled across what seems to be a pretty good deal through summit racing that is a Dart SHP 4.125 bore block with a K1 3.75” crank and K1 6” rods with Wiseco protru pistons.

I know that Tom Molnar formerly owned K1 and I know that his current product under his own name is high quality. Is the current K1 product the same design and quality as it once was? Is it essentially the same product that he sells under his name now?

Lastly in a recent thread I made comparing different strokes with a 4.125 base bore, I saw many people mentioned Compstar rods and I’m assuming cranks to go with them. How do these stack up against the K1 or Molnar pieces?
On 3.750 stroke rods I am kind of partial to the Callies Compstar rods They plenty of cam to rod clearance no need for a reduced base circle cam.

Crankshafts I am Partial to the Callies cranks and have used the Molnar line and also have used the cranks from Liberty Performance which is the same crank Manley Performance sells.

If your looking at pistons I would look at the Mahle Power Pack piston they have a 1MM 1MM 2MM ring pack Very nice pistons.

If your looking for a block I sell that block all machined to your spec for 1975.00 Shipping in the U.S. is 125.00 I would up grade to main studs.
Here is a link to my page
http://hinksonautomotive-cncblocks.com/products/

Good luck what ever way you go.
I’ve bookmarked you. What are your thoughts on CP-Carillo bullet pistons relative to the Mahle powerpaks?

I apologize for all of the questions lately. I grew up with a family automotive business and worked there into my mid 20’s. I switched careers and the family business 40 years dissolved for various reasons. So now nearly 20 years later I’m getting back into things since I’m finally able to afford such a hobby.

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Re: Molnar vs K1 vs compstar crank and rods

Post by BLOCKMAN » Thu Jan 16, 2020 11:42 am

Mikej26 wrote:
Thu Jan 16, 2020 11:17 am
BLOCKMAN wrote:
Thu Jan 16, 2020 8:33 am
Mikej26 wrote:
Wed Jan 15, 2020 7:00 pm
Been shopping around looking for different components for a 400+ sbc.

Have stumbled across what seems to be a pretty good deal through summit racing that is a Dart SHP 4.125 bore block with a K1 3.75” crank and K1 6” rods with Wiseco protru pistons.

I know that Tom Molnar formerly owned K1 and I know that his current product under his own name is high quality. Is the current K1 product the same design and quality as it once was? Is it essentially the same product that he sells under his name now?

Lastly in a recent thread I made comparing different strokes with a 4.125 base bore, I saw many people mentioned Compstar rods and I’m assuming cranks to go with them. How do these stack up against the K1 or Molnar pieces?
On 3.750 stroke rods I am kind of partial to the Callies Compstar rods They plenty of cam to rod clearance no need for a reduced base circle cam.

Crankshafts I am Partial to the Callies cranks and have used the Molnar line and also have used the cranks from Liberty Performance which is the same crank Manley Performance sells.

If your looking at pistons I would look at the Mahle Power Pack piston they have a 1MM 1MM 2MM ring pack Very nice pistons.

If your looking for a block I sell that block all machined to your spec for 1975.00 Shipping in the U.S. is 125.00 I would up grade to main studs.
Here is a link to my page
http://hinksonautomotive-cncblocks.com/products/

Good luck what ever way you go.
I’ve bookmarked you. What are your thoughts on CP-Carillo bullet pistons relative to the Mahle powerpaks?

I apologize for all of the questions lately. I grew up with a family automotive business and worked there into my mid 20’s. I switched careers and the family business 40 years dissolved for various reasons. So now nearly 20 years later I’m getting back into things since I’m finally able to afford such a hobby.
Those are nice pistons but I prefer the Mahle with the 1MM 1MM 2 MM ring pack its totally up to you.

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Re: Molnar vs K1 vs compstar crank and rods

Post by 1972ho » Thu Jan 16, 2020 11:42 am

Unless you get Carrillo or lentz most of the rod crankshaft assembly or made overseas along with scat and eagle they just put there names on the the stuff and jack up the price to give the buyer the illusion he getting something better.

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Re: Molnar vs K1 vs compstar crank and rods

Post by BLOCKMAN » Thu Jan 16, 2020 11:57 am

1972ho wrote:
Thu Jan 16, 2020 11:42 am
Unless you get Carrillo or lentz most of the rod crankshaft assembly or made overseas along with scat and eagle they just put there names on the the stuff and jack up the price to give the buyer the illusion he getting something better.
To date any of the cranks and rod assemblies I use I have had zero problems with them, I don't use any Eagle stuff and Scat I may use their 2Icr rods no cranks

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Re: Molnar vs K1 vs compstar crank and rods

Post by Schurkey » Thu Jan 16, 2020 12:49 pm

midnightbluS10 wrote:
Thu Jan 16, 2020 5:56 am
Afaik, some of Molnars stuff is imported. It's not all made in USA. Their entry level stuff specifically is imported, as I recall.
Some? I thought it was ALL Chinese-sourced.

IF (big IF) some of it is domestic, that'd be great news to me.

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Re: Molnar vs K1 vs compstar crank and rods

Post by midnightbluS10 » Thu Jan 16, 2020 6:46 pm

Schurkey wrote:
Thu Jan 16, 2020 12:49 pm
midnightbluS10 wrote:
Thu Jan 16, 2020 5:56 am
Afaik, some of Molnars stuff is imported. It's not all made in USA. Their entry level stuff specifically is imported, as I recall.
Some? I thought it was ALL Chinese-sourced.

IF (big IF) some of it is domestic, that'd be great news to me.
I knew their entry level stuff was so that's all I felt comfortable commenting about. I actually came across some of the import paperwork/electronic records online for some stuff they sell. I believe it was connecting rods that were in that shipment.
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Re: Molnar vs K1 vs compstar crank and rods

Post by Mark O'Neal » Thu Jan 16, 2020 7:38 pm

Well, if we're going to be picky on the import stuff.....Mahle is not an American company.

Or do you just mean "Chinese."

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Re: Molnar vs K1 vs compstar crank and rods

Post by Mark O'Neal » Thu Jan 16, 2020 7:46 pm

midnightbluS10 wrote:
Thu Jan 16, 2020 5:56 am
Afaik, some of Molnars stuff is imported. It's not all made in USA. Their entry level stuff specifically is imported, as I recall.
All of it is, though it's finished here. K1 is also imported. Here's a tip. If the rods are in the 600.00 to 800.00 range, they're imported. With the exception of Boostline. They're 1300.00, and they are imported too.

I just did an all American rotating assembly with all the bells and whistles. It was 9K. Nothing really fancy. Bryant crank (3K), custom rods (2.5K), coasted H13 pins (600.00), coated, gas ported pistons (2K) Steel ring set (340.00), coated bearings (400.00)...plus balancing and all the normal nonsense.

There still ain't no free lunch.

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Re: Molnar vs K1 vs compstar crank and rods

Post by Mikej26 » Thu Jan 16, 2020 8:10 pm

Personally I’m not that hung up on whether they imported or US made. If the quality is there, I will go with it. Sure I’d rather keep the money in the US, but realistically most of us a forced to make compromises.

I never got clarity about whether the current K1 cranks and rods are comparable to the Molnar stuff. There is a price discrepancy between the two, not massive, but it’s there. So would be nice to be able to pay less if they’re essentially the same parts.

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