Re: Old 318 with new magnum heads *UPDATE*
[Re: patrick]
#1180384
04/10/13 11:36 PM
04/10/13 11:36 PM
|
Joined: Jan 2003
Posts: 1,586 Tampa, FL
tpabayflyer
pro stock
|
pro stock
Joined: Jan 2003
Posts: 1,586
Tampa, FL
|
Anybody wanting to do this please search my screen name and see my success using magnum heads on a 318..... The best choice in my opinion for the money and will wake up any 318 big time...... 300HP easy with the right combo...... TBF........ Very easy.........
71 Challenger 528 Hemi project 09 Gr Cherokee 5.7 hemi in da house!!
|
|
|
Re: Old 318 with new magnum heads *UPDATE*
[Re: tpabayflyer]
#1180385
04/13/13 11:42 PM
04/13/13 11:42 PM
|
Joined: Mar 2005
Posts: 1,630 North Central Florida
eightlitermopar
OP
top fuel
|
OP
top fuel
Joined: Mar 2005
Posts: 1,630
North Central Florida
|
Got the radiator back in today after making a few minor repairs.
I am upgrading from my dinky 4 blade solid fan to a 5 blade with a fan clutch. It is much bigger and closer to the upper radiator hose.
Everything has been much closer on this motor with this upgrade!
eightlitermopar
Mopar or no car
|
|
|
Re: Old 318 with new magnum heads *UPDATE*
[Re: eightlitermopar]
#1180387
04/14/13 12:15 AM
04/14/13 12:15 AM
|
Joined: May 2003
Posts: 15,487 Florida
scratchnfotraction
I Live Here
|
I Live Here
Joined: May 2003
Posts: 15,487
Florida
|
you can find a smaller diam. blade for the clutch. they have 16/17/18 ect... I happen to find the size i needed at the u-pull on a striaght 6 amc hornet 7 blades and fit the inside the stock rad shroud on my truck. if the rubber motor mounts flex much it might get a water leak. measure the diam. of the fan blade end to blade end,I will check to see if I have a smaller one in my junk pile. how close is the clutch from the rad core? are you going to run a shroud? you can find shorter longer fan clutch shafts as well when uprading. looks like it is moving along bolting together.
|
|
|
Re: Old 318 with new magnum heads *UPDATE*
[Re: scratchnfotraction]
#1180388
04/14/13 12:41 AM
04/14/13 12:41 AM
|
Joined: Mar 2005
Posts: 1,630 North Central Florida
eightlitermopar
OP
top fuel
|
OP
top fuel
Joined: Mar 2005
Posts: 1,630
North Central Florida
|
This was a fan clutch and 5 blade out of a 71 satellite with a 318. The motor is a 1985, so I don't know what the original blade and clutch came out of. I'll measure it sometime tomorrow to see what the diameter is. I will not be using a shroud at this time, since the tiny radiator does not have provision for one. I am going to run this radiator this year and replace it with a bigger aluminum unit next spring. I am not sure of the exact fan measurement from the radiator, but its probably between 1-2 inches. I'll measure that exactly tomorrow as well. I have new motor mounts, but the motor torque causing the blade pulling towards the hose has me a little worried. I still could put a torque strap somewhere to limit this I do have some more tweaking of things to do before I fire it up. I acquired the lifters from someone I trust who claim they had never been used. However, I am a bit leery of this and have ordered new ones to install before I fire it off. I know it's a set back but good peace of mind. I have used slightly used lifters with new cams in the past and have never personally had a problem , however, I don't want to shred a new cam in my fresh motor because I cut a corner on lifters. eightlitermopar
Mopar or no car
|
|
|
Re: Old 318 with new magnum heads *UPDATE*
[Re: eightlitermopar]
#1180389
04/14/13 03:29 PM
04/14/13 03:29 PM
|
Joined: Mar 2005
Posts: 1,630 North Central Florida
eightlitermopar
OP
top fuel
|
OP
top fuel
Joined: Mar 2005
Posts: 1,630
North Central Florida
|
To answer the questions previously stated, The fan is a 19 inch viscous fan The fan clutch is exactly 1-1/4 inch from the radiator. I may have to downsize the fan size so I don't blow anything up eightlitermopar
Mopar or no car
|
|
|
Re: Old 318 with new magnum heads *UPDATE*
[Re: eightlitermopar]
#1180390
04/14/13 10:23 PM
04/14/13 10:23 PM
|
Joined: May 2003
Posts: 15,487 Florida
scratchnfotraction
I Live Here
|
I Live Here
Joined: May 2003
Posts: 15,487
Florida
|
yes,I would go down to an 18" or 17" blade on that clutch. I would even run a smaller direct drive fan if it moved it away from the rad hose. IMHO,I have never noticed any difference in HP/performance/MPG on a daily driver/street duty engine running a direct drive fan. mine is 18"-7 blade fan from the 78 amc hornet 258 6 cyl. might scratch one up at a local JY/U-Pull. mid 80s model /6 dippy/aspen/volare should have the 18"-5 blade
|
|
|
Re: Old 318 with new magnum heads *UPDATE*
[Re: scratchnfotraction]
#1180391
04/14/13 11:20 PM
04/14/13 11:20 PM
|
Joined: Mar 2005
Posts: 1,630 North Central Florida
eightlitermopar
OP
top fuel
|
OP
top fuel
Joined: Mar 2005
Posts: 1,630
North Central Florida
|
I was able to dig up a fan from my "parts" selection at my dads house. I found a 7 blade 18 inch fan. I mocked it up and it clears a lot better.
I will reuse the bigger fan later when I get a bigger radiator.
The stock fan was a solid 4 blade (18")
I figured I'd upgrade a little while I am at it. If I need to I can always go back to the stock fan.
In the mean time I'll be swapping out lifters this week (I am paranoid) and hopefully have the motor broken in by next week. Somehow my need to go to work all the time gets in the way of this stuff!
eightlitermopar
Mopar or no car
|
|
|
Re: Old 318 with new magnum heads *UPDATE*
[Re: bboogieart]
#1180393
04/15/13 12:53 AM
04/15/13 12:53 AM
|
Joined: Mar 2005
Posts: 1,630 North Central Florida
eightlitermopar
OP
top fuel
|
OP
top fuel
Joined: Mar 2005
Posts: 1,630
North Central Florida
|
Since I am to the paranoid part of my project, I’ll throw the question out. I am going to put new lifters in my motor for peace of mind. In the past, I used old lifters with new cams (break in to daily driving). I didn’t want to chance it with this motor… Has anyone else done this (old lifters, new cam) and had no bad results? I have heard all types of bad stories of swiping lobes because of this, but it’s all hearsay….random stuff on the internet. So, fact or fiction? What do you say? P.S. I am changing the lifters with brand new ones regardless. Eightlitermopar
Mopar or no car
|
|
|
Re: Old 318 with new magnum heads *UPDATE*
[Re: eightlitermopar]
#1180394
04/15/13 09:18 AM
04/15/13 09:18 AM
|
Joined: Jan 2003
Posts: 16,123 Grand Haven, MI
patrick
I Live Here
|
I Live Here
Joined: Jan 2003
Posts: 16,123
Grand Haven, MI
|
flat tappet? never re-used lifters, always put in new....roller cam, reused roller lifters without issue
1976 Spinnaker White Plymouth Duster, /6 A833OD 1986 Silver/Twilight Blue Chrysler 5th Ave HotRod **SOLD!*** 2011 Toxic Orange Dodge Charger R/T 2017 Grand Cherokee Overland 2014 Jeep Cherokee Latitude (holy crap, my daughter is driving)
|
|
|
Re: Old 318 with new magnum heads *UPDATE*
[Re: eightlitermopar]
#1180395
04/15/13 09:31 AM
04/15/13 09:31 AM
|
Joined: May 2003
Posts: 15,487 Florida
scratchnfotraction
I Live Here
|
I Live Here
Joined: May 2003
Posts: 15,487
Florida
|
Quote:
Since I am to the paranoid part of my project, I’ll throw the question out.
I am going to put new lifters in my motor for peace of mind.
In the past, I used old lifters with new cams (break in to daily driving).
I didn’t want to chance it with this motor…
Has anyone else done this (old lifters, new cam) and had no bad results? I have heard all types of bad stories of swiping lobes because of this, but it’s all hearsay….random stuff on the internet.
So, fact or fiction? What do you say?
P.S. I am changing the lifters with brand new ones regardless.
Eightlitermopar
this is the very reason I upgraded to roller cam in the 318 I have.
no lifter break in needed so no...
I want to swap a cam/lifters/springs in my 440 and have the same paranoid feelings about the break in and it wiping a lobe.
I too have read many horror storys of big $$ engine failures on fire up and break in. most was with a comp cam.
I do know when I was young seeing my uncles swap cams 2-3 times on a good running engine but they always used new cam and lifters.
I personaly have never seen a failure. my first engine i did not even know enuff to do a break in,it ran 10 yrs with no trouble. hammerd it from start up till it droped a valve.
now I have done and read so much I am a paranoid nelly and skeerd to try a cam swap on a flat tappet engine.
all I can say is good luck and 2nd the new lifters over buddys hear say with a new engine.
|
|
|
Re: Old 318 with new magnum heads *UPDATE*
[Re: eightlitermopar]
#1180397
04/15/13 11:13 AM
04/15/13 11:13 AM
|
Joined: Jan 2003
Posts: 16,123 Grand Haven, MI
patrick
I Live Here
|
I Live Here
Joined: Jan 2003
Posts: 16,123
Grand Haven, MI
|
flat tappet, I've heard to ALWAYS use new lifters--the lifters and the cam lobes seat to each other, and bad things could happen even if you mate a used cam to it's broken in lifters IF YOU DON'T KEEP THE LIFTER WITH THE SAME LOBE IT WAS BROKE IN ON
for the small cost, get new lifters...should be what, less than $50?
1976 Spinnaker White Plymouth Duster, /6 A833OD 1986 Silver/Twilight Blue Chrysler 5th Ave HotRod **SOLD!*** 2011 Toxic Orange Dodge Charger R/T 2017 Grand Cherokee Overland 2014 Jeep Cherokee Latitude (holy crap, my daughter is driving)
|
|
|
HELP! Magnum head update!
[Re: eightlitermopar]
#1180399
04/22/13 01:56 PM
04/22/13 01:56 PM
|
Joined: Mar 2005
Posts: 1,630 North Central Florida
eightlitermopar
OP
top fuel
|
OP
top fuel
Joined: Mar 2005
Posts: 1,630
North Central Florida
|
Ok, so I learned something today. 1) You have to remove the entire intake manifold when removing lifters on an LA motor with magnum heads. 2) There was water in my lifter galley! Look at the pics, it looks like it is leaking from between the heads and the block? What the heck is going on here??? Heaven forbid anything go easy with a project eightlitermopar
Mopar or no car
|
|
|
Re: HELP! Magnum head update!
[Re: eightlitermopar]
#1180401
04/22/13 03:13 PM
04/22/13 03:13 PM
|
Joined: Jan 2003
Posts: 16,123 Grand Haven, MI
patrick
I Live Here
|
I Live Here
Joined: Jan 2003
Posts: 16,123
Grand Haven, MI
|
http://www.summitracing.com/parts/mrg-1121g/overview/make/dodgethese are what I used on mine, put them on dry, and torqued with the proper pattern and had no issues with coolant leaking....
1976 Spinnaker White Plymouth Duster, /6 A833OD 1986 Silver/Twilight Blue Chrysler 5th Ave HotRod **SOLD!*** 2011 Toxic Orange Dodge Charger R/T 2017 Grand Cherokee Overland 2014 Jeep Cherokee Latitude (holy crap, my daughter is driving)
|
|
|
|
|