Notices
Engine Performance This section is for discussion on all engine building related questions.
Sponsored by:
Sponsored by: KPower

Forged Rods - Suggestions?

Thread Tools
 
Search this Thread
 
Old Feb 27, 2020 | 12:29 PM
  #21  
LeoNA's Avatar
Senior Member
 
Joined: Aug 2019
Posts: 850
Total Cats: 107
From: Commiefornia
Default

They do offer a Maxi Light version as a special order. Although there is no weight listed for these. They are not made from forgings and cost almost as much as the H beam Carillo. Most likely since they are machined from cold drawn 4340 bar stock they are manufactured in the US.

Originally Posted by emilio700
Close to OEM then. Not light, same as weight as Manley.
Old Feb 29, 2020 | 08:05 PM
  #22  
markano's Avatar
Newb
 
Joined: Feb 2020
Posts: 2
Total Cats: -10
Default

They can take more pressure before cracking/failure.
Nox Vidmate VLC

Having more air and fuel combusting (required to make more power out of the same volume) means that there's higher forces acting upon the engine internals, so you'll need stronger materials to be able to withstand those forces.

Last edited by markano; Mar 1, 2020 at 07:41 PM.
Reply
Leave a poscat -5 Leave a negcat
Old Mar 1, 2020 | 08:05 AM
  #23  
themonkeyman's Avatar
Senior Member
 
Joined: Nov 2016
Posts: 697
Total Cats: 91
From: Los Angeles, CA
Default

Originally Posted by markano
They can take more pressure before cracking/failure.

Having more air and fuel combusting (required to make more power out of the same volume) means that there's higher forces acting upon the engine internals, so you'll need stronger materials to be able to withstand those forces.

Old Jan 11, 2023 | 01:39 PM
  #24  
MrMohr2's Avatar
Newb
 
Joined: Jan 2018
Posts: 9
Total Cats: 0
Default Did you ever get an answer?

Originally Posted by mx5-kiwi
Had a "small" engine issue....

I beleive I have read a few years ago here, chinese is "okay".

So just checking what the "forums" current consensus and advice on rods might be. Iif it was just the rods, we would spend the money on Manly...but we also need a crank and possibly a block and all the machining/balancing etc that goes with it, so budget and saving a few hundred here or there is an issue (as usual).

Full race engine. Rev limit 7500 - 8000 depending on torque curve. Borg Warner turbo running max of 22 psi around 350 whp.


Landed in NZ.
Manly - Supermiata approx $790.00
Eagle $650.00
Maxpeedingrods $450.00

appreciate any advice for or against whats listed or anything else to consider?
i was able to get some Eagle Rods for $330, and ran 21psi for a few laps... Until I burned a hole in my piston!
but they claimed they were good for 900hp.
I'd rather have a torque number, but that was so far above where I was going.
But the rods held up.


Last edited by MrMohr2; Jan 11, 2023 at 01:41 PM. Reason: Forgot the last sentence.
Old Jan 13, 2023 | 06:54 AM
  #25  
kricsesz's Avatar
Newb
 
Joined: Oct 2020
Posts: 5
Total Cats: -1
Default Molnar rods

What do you think guys about Molnar rods for NB2? Seems like lighter and better finished than Manley.
Reply
Leave a poscat -1 Leave a negcat
Old Jan 13, 2023 | 10:18 AM
  #26  
sixshooter's Avatar
Moderator
iTrader: (12)
 
Joined: Nov 2008
Posts: 22,157
Total Cats: 3,538
From: Tampa, Florida
Default

Originally Posted by kricsesz
What do you think guys about Molnar rods for NB2? Seems like lighter and better finished than Manley.
Never heard of them. I'm using Brian Crower rods, which aren't light.
Old Jan 13, 2023 | 11:14 PM
  #27  
Girz0r's Avatar
Moderator
iTrader: (1)
 
Joined: Jun 2014
Posts: 3,034
Total Cats: 323
From: Austin, TX
Default

Originally Posted by kricsesz
What do you think guys about Molnar rods for NB2? Seems like lighter and better finished than Manley.
I'd still go with Manley.
Old Jan 15, 2023 | 04:23 PM
  #28  
themonkeyman's Avatar
Senior Member
 
Joined: Nov 2016
Posts: 697
Total Cats: 91
From: Los Angeles, CA
Default

Originally Posted by kricsesz
What do you think guys about Molnar rods for NB2? Seems like lighter and better finished than Manley.
Unless you’re shooting for 300+ at the wheels just go with MaxSpeedingRods. Hundreds of guys run them without issue. A very known-quantity for boosted Miatas.
Old Jan 16, 2023 | 11:53 AM
  #29  
bimmerboy's Avatar
Junior Member
 
Joined: Sep 2021
Posts: 239
Total Cats: 50
From: Bloomington, IL
Default

If you like K1 rods, Molnar supposedly better. K1 was started by Molnar who then left to start another rod company under his own name.
Old Jan 16, 2023 | 04:16 PM
  #30  
Gee Emm's Avatar
Elite Member
 
Joined: Jul 2014
Posts: 1,576
Total Cats: 244
From: Canberra, sort of
Default

This is a timely thread.

I think I have a case of the 'banana rods' after developing a bad knock that is otherwise untraceable
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Eunos91
Engine Performance
36
May 5, 2017 03:30 PM
wackbards
WTB
1
Feb 23, 2017 05:21 PM
leatherface24
Engine Performance
65
Feb 28, 2011 10:34 AM
gc8pat
Engine Performance
11
Jun 14, 2010 09:31 PM
Chris Swearingen
General Miata Chat
20
Aug 14, 2008 02:40 PM




All times are GMT -4. The time now is 10:00 AM.