What aluminum rods do you guys recommend to use and or what are you guys using and have a good experience with. what's the life expectancy of them if you just track use only. I know that you have to notch the block to make room and how much do they stretch? Thanks in advance.

 

i believe the typical stretch is .012 that is accounted for in the design.

BME and GRP are the typical ones. If I ever did that i'd use GRP.

 

i was wondering the same thing. I heard that you can not daily drive with these rods because they are aluminum and they stretch when hot.

 

The rods wont stretch, but I would personally not bother running them. The oil has to be up to a certain temperature, and not get over a certain temperature to maintain the proper bearing clearances. If its an outlaw car and making 300whp per cylinder I would say yes, but for the average engine under 250 whp per cylinder dont bother.

 

We put 15k street miles on an aluminum rod 11:1 Evo motor making 500whp/500tq on a stock Evo IX turbo... When we pulled it apart, there were signs that **** was going wrong lol

 

So seems like there's not to many aluminum rod users on here. I hope someone can chime in with their good experience using these rods and hopefully can give us some input. Thank you for the input given.

 

there has been a huge discussion on aluminum rods in the past.. i cant remember but i think it was about 2 months ago.

 

We use R&R Rods for our custom Steel and Aluminum rods. Never had any problems yet.

 

I use RNR and have not had a single issue with them thus far.

 

Do you a contact info for R&R? How much are they for ls or GSR rods. Where's the best place to get them from if they have any authorized dealer.

 

aluminum rods are awesome. they also act like a shock obsorber to your bearings. the rods do stretch under higher rpms and go back to normal length. GRP has very nice rods and good customer service. 303-935-7565

 

You can call English Racing, they deal a lot with R&R. 360-210-7484

 

I would think the best people or boards to get info on aluminum rods would be from V8 guys.

I know there are aluminum rods in import engines now, but V8 guys have been using them for years and have a lot more experience with them IMO.

 

We havent had any issues with the rods themselves once we switched to the R&R. Groden definitely stay away from, but GRP/R&R/BME are all decended from the same company before they all split off.

Keep oil at 220-240 and you are fine, we also add a little clearance on the top of the rod to the piston on top of the fact that the little end of the rod is physically way larger than its steel counterpart. Bearing life is increased when the car is on the edge of the tune as well.

Aaron

 

We use BME's. We had 100 passes on our original GSR set before going to the LS crank, and they are still in good usable condition.

 

Thanks for the input guys. Being lighter than steel rods, are you able to rev them higher? Are you guys still using oem bearings? I mean it doesn't have to be from honda but any bearings like ACL etc. How can you keep the oil temperature stable without going to high.

 

I think any rod mfg for hondas b series in particular, all have great reliability. Main thing to ask.is how.ling do.bearings last in an aluminum rod setup vs steel. Many great steel.rods out there, just be sure to.use a 625 or better bolt for them you should be great.

 

we run bmes also///// revin to 11200 all day..

 

That's nice cez, I was thinking about trying to use aluminum rods for the next build.

 

I run MGP for B20vtec, daily driven now almost 25k miles