what main and rod bearings to use in my build

[nkosi]

hey guys can u help me with choosing the main and rod bearings to use with my 1g 6 bolt engine build ... i was going to use ACL Aluglide mains bearings with the full grove for better oiling and the ACL Aluglide rod bearings ...can a wise man tell me if these will stand up to the 550whp+ im planning to make with the new engine. Also what are the torque specs for the ARP head studs and ARP main studs ...thanks in advance guys ...

 

[92AWDHX40]

ACls are a good brand made in japan, Clevite 77 bearings made in the us are also a good brand. pick one and dont worry too much about it, pick one and make sure you plastigauge them, and you should be ok.

 

[nkosi]

so the ACL Aluglide rod and main will stand up to the power level im seeking ...and do u by chance know the torque specs for the ARp head and main studs i bought them used adn didnt get the original boxes .

 

[92AWDHX40]

Specs no i would search on this site or google. im no expert but some stock blocks can handle 400 hp with stock bearings, as a indicator i would look around on vendor sites for benarings so much information just on the site.

 

[GsXdSmKingGsX]

ACL's fasho.. Its probably the most common.

 

[3kgt2nv]

I would go wit the tri metal vs the aluglide bearings and for the head studs its 86 ft pounds with moly lube. I don't know the mains but for the mains you need to have the block align bored after torquing the studs down

 

[viperlp01]

I would go wit the tri metal vs the aluglide bearings and for the head studs its 86 ft pounds with moly lube. I don't know the mains but for the mains you need to have the block align bored after torquing the studs down

??? What are you talking about.... did I miss something where he asked about head studs?

Ya man 550 wheel is no big deal at all for a set of ACL bearing. The mains do not need to be align honed especially if your using stock bolts. Most blocks I send to the machine shop with ARP main studs don't even need align hones done to them.

 

[3kgt2nv]

so the ACL Aluglide rod and main will stand up to the power level im seeking ...and do u by chance know the torque specs for the ARp head and main studs i bought them used adn didnt get the original boxes .

here is where he asked.

The mains do not need to be align honed especially if your using stock bolts. Most blocks I send to the machine shop with ARP main studs don't even need align hones done to them.

he is using arp main and head studs he bought used. To properly use main studs they should be correctly torqued down and measured and if necessary align bored to spec. You cant just drop them in as the clamping force is a lot higher and it compresses the girdle and can cause bearing and crank damage if not installed properly.

 

[LiquidX]

I use OEM bearing on my build. Has seen an unofficial
480hp according to ECMlink estimate and not a single speck of deformation.

 

[92AWDHX40]

I got acls when i did my build a few years ago, ill keep them in there even as long as they hold up, and ill use them again in my 450hp plus build next.

 

[kidtsi]

I would use ACL if the crank is an aftermarket like Eagle or Manley, if you are polishing your stock crank then i recommend Clevitte. ACL Tri-metal bite the stock crank a little bit more also make sure you plastigauge them and you use a looser spec for the extra oiling that is needed, I'll provide a link if i find it to prove what i'm saying.

 

[92AWDHX40]

Ill keep that in mind.

 

[viperlp01]

here is where he asked.



he is using arp main and head studs he bought used. To properly use main studs they should be correctly torqued down and measured and if necessary align bored to spec. You cant just drop them in as the clamping force is a lot higher and it compresses the girdle and can cause bearing and crank damage if not installed properly.

Yes but the machine shop should check the mains and if they are out of spec then align hone the mains. Also if these are used 6 bolt studs I would go to 90 ft/lbs. The 7 bolt studs are smaller in diameter and require a 85 ft/lb torque spec so I would say that the 6 bolts studs are in the 90+ range.

 

[nkosi]

Yes but the machine shop should check the mains and if they are out of spec then align hone the mains. Also if these are used 6 bolt studs I would go to 90 ft/lbs. The 7 bolt studs are smaller in diameter and require a 85 ft/lb torque spec so I would say that the 6 bolts studs are in the 90+ range.

ok viper so 90 ft/lbs for the head studs what about the main studs ... the machine shop im using has done a few 4G63 for racing up here in montreal but i will mention that it the mains are out of spec to aling hone the mains ... so the ACL Aluglide with the full groove and the Aluglide rod bearings should be good for my build im asking because the retailer that im getting the bearings only has ACL tri-metal for the main bearings and doesnt carry the Acl tri metal for the rods ...but could i use the combo of Aluglide for the rod bearings and the tri metal for the main bearings

 

[nkosi]

Can anyone tell me if i could use a combo of ACL race main bearings and ACL aluglide rod bearings in my build ...

 

[3kgt2nv]

as long as they are in spec then you should be able to. Think how many people change rod bearings without taking the crank out.

 

[nkosi]

ok dude i just wanted to make sure cause the shop that im getting the bearings from up here in canada just have the ACL tri-metal race bearings for the main and the ACL aluglide for the rod bearings ... i will make sure that the specs are on point when i get the bottom end back from the machine shop...i will use plastigauge to measure the clearances

 

[9!'clipseDOHC]

I would only use the ACL Race bearings. The aulguide bearings are more for OEM replacement, not performance. Here is a more indepth explination I posted on another thread:

I am using ACL Race bearings and would use them again. They are the standard on street/strip 4G63 builds.

The ACL Aluglide bearings are designed for OEM builds. If you you going to be pushing more then stock power then I would use the Race series. Here is a quote from ACL's website: Aluglide rod and main bearings were developed for OEM engines and have the inherent physical properties perfectly suited for replacement applications.

This is from ACL's performance website and shows a comparison between the Aluglide and Race bearings.

You must be logged in to view this image or video.

I am not very familiar with King bearings on 4G63's but like I said above, I would only use ACL Race bearings. They have been proven time and time again.

I hope this helps!

 

[nkosi]

I would only use the ACL Race bearings. The aulguide bearings are more for OEM replacement, not performance. There are other threads where I have explained this more in depth, I'll try to find a link for you but I'm on my phone right now.

ok please get me the link i will read it ...i wanted to go all ACl tri-metal race but the shop i wanted to buy them from didnt carry the tri-metal race rod bearings just the aluglide ...if u read all the responses in this thread they said the aluglide would stand up to the 550whp im planing to make on the new engine

 

[3kgt2nv]

If you want I have a set I just ordered from map performance I can ship up to canada for exact cost plus shipped usps insured so you dont have the customs fee ups charges.

 

[nkosi]

If you want I have a set I just ordered from map performance I can ship up to canada for exact cost plus shipped usps insured so you dont have the customs fee ups charges.

how much are u looking to get for the parts ...what do u have the ACL tri-metal race rod and main bearins new in box

 

[9!'clipseDOHC]

ok please get me the link i will read it ...i wanted to go all ACl tri-metal race but the shop i wanted to buy them from didnt carry the tri-metal race rod bearings just the aluglide ...if u read all the responses in this thread they said the aluglide would stand up to the 550whp im planing to make on the new engine

I updated my above post with the info.

Aulguides are not designed for that kind of power.

MAP has the ACL Race rod ($39) and main ($59) bearings: Engine Bearings - Engine Components - DSM - Mitsubishi - Modern Automotive Performance

 

[3kgt2nv]

MAP has the ACL Race rod ($39) and main ($59) bearings: Engine Bearings#-#Engine Components#-#DSM#-#Mitsubishi#-#Modern Automotive Performance

This is what I bought but I am going with a built stroker from them. I was going to return them but I can ship you them if you need them. Ive done alot of shipping to canada on the 3000gt forums so i know the deal with the import fees on ups.

ill pm you with the details.

 

[nkosi]

I updated my above post with the info.

Aulguides are not designed for that kind of power.

MAP has the ACL Race rod ($39) and main ($59) bearings: Engine Bearings#-#Engine Components#-#DSM#-#Mitsubishi#-#Modern Automotive Performance

hey 9!'clipseDOHC what do u think of king bearings from Maperformance ...they seem to be really good from what their site is saying plus they have a really good price on both rod and main bearings ...here is their link share your thoughts on them with me

King Engine Bearings

 

[9!'clipseDOHC]

hey 9!'clipseDOHC what do u think of king bearings from Maperformance ...they seem to be really good from what their site is saying plus they have a really good price on both rod and main bearings ...here is their link share your thoughts on them with me

King Engine Bearings

Read my whole quote on post # 18. At the bottom it says that I have no expirience with King bearings on a 4G63 and would only recommend ACL Race bearings as they have been proven time and time again.