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View Full Version : SR Rod Bearings....... help?



chris4130
04-29-2003, 11:43 PM
Well after calling a dozen places I now have about 1/2 a dozen diffrent answers. I need to know if sr20det rod/main bearings are the same as the fwd sr? I've got everything torn apart and I have the rod bearing numbers (off the caps) if that helps??? Anyway anyhelp is apperciated.
Thanks,
-Chris

iHATEstupidity
04-30-2003, 12:11 AM
make note of the people who told you the fwd bearings couldn't be used... and never go to them for technical advice again. better yet, please tell the public who these people are.
thank you come again

THINK

chris4130
04-30-2003, 12:16 AM
Well, The problem is that most people said either the rod bearnings will work and the main's won't or vise-versa. So you are saying that both main and rod bearings are interchangeable? Just making sure.
Thanks for your help,
-Chris

Jeff Taylor
04-30-2003, 01:41 AM
chris -- trying to rid of that rod knock?

This is Jeff with the (previously) multi-colored SR.

87Kevin
04-30-2003, 01:49 AM
Yep they work - rod's and mains 100% for sure - did it a few months ago myself.

chris4130
04-30-2003, 02:12 AM
Hey Jeff... yea finally fixing that. I herd you went for the flat black look eh? Hit me up on AIM sometime my sn is "chris4130" creative huh http://forums.freshalloy.com/images/graemlins/smirk.gif

Thank you for clearing that up.
-Chris

InterC00l
04-30-2003, 02:47 AM
Any aftermarket options for rod/main bearings?

-InterC00l

Ambush_Paddington
04-30-2003, 11:25 AM
Any aftermarket options for rod/main bearings?

-InterC00l



Yes : )

**DONOTDELETE**
04-30-2003, 11:39 AM
Any aftermarket options for rod/main bearings?

-InterC00l



You bet. I have Tomei crank and Nismo main, power enterprises also makes bearings, not sure who else does.

pampadori
04-30-2003, 01:26 PM
Clevite bearings are pretty good for the v8 guys, and they make them for the sr20. of nissan bearings are very good too. ie, i had little to no oil pressure for 1 year on my sr20det. the bearings looked like they had very little wear. :0) stupid broken oil pickup...
shaun

S13wannabe
04-30-2003, 01:38 PM
is there any specific year of the fwd version that need to be used ? just making sure i'm clear on this, i remember people a while back saying that the autoparts stores had a listing for 2 different sizes

InterC00l
04-30-2003, 02:50 PM
Clevite bearings are pretty good for the v8 guys, and they make them for the sr20.



Where can I get the Clevite bearings? Also what about the Nismo/Tomei ones? I've found a source for the PE bearings, but they are way too expensive. $200 for a set of mains.

-InterC00l

NOSTALGIC_HERO
04-30-2003, 05:49 PM
just stick with stock DE bearings-

grades are as follows:


for mains -
12207-60J00 (black)
12207-60J01 (brown)
12207-60J02 (green)
12207-60J03 (yellow)
12207-60J04 (blue)
12207-60J05 (pink)
12207-60J06 (no color)

for connecting rods-- you have 3 sizes
i ordered grade 1's (my pin journals were within the factory grade std limits)
12111-1N501 (grade #1's) x8 (con rod bearings only sell in halfs)

connecting rod nuts 12112-40F00 x8
pulsar gti-r main bolts 12293-54C00 x10
thrust washers (on both sides of main#3)
12280-60J00 x2

also, while your at it, try out some pulsar pistons and new rings.... make sure you have SR FSM handy for setting proper ring gap...

Hugh
04-30-2003, 07:11 PM
I thought Clevite DOESN'T make bearings for the SR. Someone researched this and said they don't. Are you passing on rumor, or do you have some proof? I wan't to get clevite bearings for my SR if possible.

If not, I will get the Tomei as they are cheaper than Nismo.

iHATEstupidity
04-30-2003, 07:32 PM
http://sr20.hybrids.jp/van/sr20_clevites.jpg

THINK

InterC00l
05-01-2003, 01:53 AM
Where can I get the Clevite bearings? Do you have a part number? Price?

Thanks

-InterC00l

NOSTALGIC_HERO
05-01-2003, 02:31 AM
from what i have heard from a friend, they come in only 2 sizes, standard and oversize..

i wonder if you can get then in all 6 service sizes???

HTR
05-01-2003, 04:26 AM
Is there something not good about nissan oem bearings?

InterC00l
05-01-2003, 04:28 AM
Is there something not good about nissan oem bearings?



I've heard they don't like spinning over 8000rpm. I plan on going a bit higher than that when I get the head built to keep up.

-InterC00l

SRFiveTen
05-01-2003, 04:35 AM
I plan on


got mitutoyo?

NOSTALGIC_HERO
05-01-2003, 04:39 AM
of course, if you do not have access to proper measuring tools, a simple thickess test can be performed on the bearings..grab the bearing with your thumb and index finger(remember to use your "better" hand) and write the thicknesses down... make sure it meets FSM spec! 8k rpm?

i did this for my 12k motor!

InterC00l
05-01-2003, 04:44 AM
Ugh, thanks for the replies http://forums.freshalloy.com/images/graemlins/mad.gif Maybe I'll just go talk to my 3S-GTE buddies...

-InterC00l

NOSTALGIC_HERO
05-01-2003, 04:52 AM
yep, toyota people generally have tighter thumb to index finger tolerances...

iHATEstupidity
05-01-2003, 05:48 AM
if you're just doing a basic rebuild/refresh, i suggest just getting oem bearings. they're cheap, easily-acquired, and you have a wide selection of "grades" to choose from (assuming you have an fsm and can read your block). now, if you're going to build the engine up, then i would suggest running clevites, because you will already have machined your block and crank for them (oem bearings are not avl in oversize beyond .005 or so, if i remember correctly, which limits how much you can machine your crank before oem bearings no longer become a viable option.

CB-1629P-.XXMM (XX = oversize amount = i.e. .25, etc...)

TW=590S
MS-2015P.XXMM (XX = see above)

price...not sure how much retail is...close to 200? i got mine for much less, but that doesn't count

THINK

SRFiveTen
05-01-2003, 12:04 PM
limits how much you can machine your crank before oem bearings no longer become a viable option


nissan offers 0.25mm undersize bearings (thicker than stock).
they might be same as those clevites you have which seem to be made in japan.

nissan rod brgs are offered in 0.08, 0.12 and 0.25mm undersize (thicker than stock).

according to my clevite77 catalog, sr20 bearings are offered in one standard size or .25under, no other options.
nissan offers six grades of standard size main bearings and one undersize; four grades of standard size rod bearings and three undersize.
power enterprize offers six main and six rod.


btw, interc00l, mitutoyo (http://www.mitutoyo.com/index.php) is not a hybrid mitsubishi-toyota engine.

iHATEstupidity
05-01-2003, 03:59 PM
ah yes, you are correct, and here is the same info, reiterated:
http://www.se-r-list.org/archives/1999/1999-07/msg00942.html

the intriguing thing is, i could've sworn that clevite did offer more sizes than just the .25mm because i remember talking with someone at the crank shop about them back then...

i am still under the impression that the clevite bearings are made by the same manuf. as the oem units, but it is quite possible that they also benefit from the additional, patented processes that clevite applies to their lineup of bearings. it would be interesting to do an analysis on both to determine exact differences...

THINK

SRFiveTen
05-01-2003, 04:29 PM
it is quite possible that they also benefit from the additional, patented processes that clevite applies to their lineup of bearings.


so, clevite has a plant in japan??
IF clevite and nissan bearings turn out to be the same, i guess clevites will fail at 8000rpm (as some members state/believe nissan bearings indeed fail)
how bizarre http://forums.freshalloy.com/images/graemlins/smirk.gif

iHATEstupidity
05-01-2003, 04:40 PM
well clevite subcontracts other manufacturers to make some of their bearings... like in the case of most japanese engines, they have a japanese manufacturer produce the bearings because they already have the tooling. the thing is, clevite specifically says that their whole lineup includes features such as their trimetal design, etc. (which is emulated in some form or another by most all other bearing manufacturers by now) and so i assume that, even tho they have their foreign engine bearings manuf. by foreign manufacturers, perhaps when those plants make the batch of clevite bearings, they utilize a different process per clevite's proprietary instructions (which is not performed on the batch of oem bearings made from same plant). and so, if that's the case, the clevites should be perfectly fine for hi-po applications, because all other clevites are some of the best aftermarket bearings you can get (for domestics) imo.

THINK

chris4130
05-01-2003, 04:51 PM
Thanks for the very informative replys.

I think I'll stick with stock bearnings. How should I go about determining which size/grade to order? I'm a little confused. I was told by someone to get the numbers off the rod bearing caps and that is what determines the correct size? Also is it necessary that I buy the following?

connecting rod nuts 12112-40F00 x8
pulsar gti-r main bolts 12293-54C00 x10
thrust washers (on both sides of main#3)
12280-60J00 x2

Thanks again for the help.
-Chris

One more thing... out of curiosity what are the advantages of Pulsar pistons?

NOSTALGIC_HERO
05-01-2003, 05:08 PM
good choice on the bearings.. however.. you must obtain FSM
!!!!!!

aussie fsm for the most part is error free (bearing stuff is correct and has been cross verifed by certain peoples)

as for the parts i suggested ordering:
--- the new fastening hardware--

its highly recommended NOT to re-use hardware that is torqued in sequence (torque to yield) but rather replace with same new- or better..

hence the part numbers i gave you (better) in exception for the thrust bearings (standard SR DE/DET) and the connecting rod nuts.

pulsar rods? hmm not worth any expense on rods if your stock rods are dimensionally straight still. (FSM glves values for proper rod dimensions)

however, pulsar pistons are available stateside through courtesy nissan (8.3:1) and if you decide to get them, shoot some pictures as myself and a few others would like to see the crowns (compared to stock 54C currently available in japan)

Remember FSM FSM FSM FSM FSM FSM DONT LEAVE HOME WITH OUT IT!!

and a final note- to mr intercool.. i sincerely hope that you can let us know more about this thumb/index finder method that the toyota guys are using--- its quite accurate to compare apples to oranges no? >haha<

chris4130
05-01-2003, 05:17 PM
Yea sorry I thought you were talking about rods in your earlier post. I changed my post but I guess not in time http://forums.freshalloy.com/images/graemlins/crazy.gif anyway... I will be getting a FSM it seems (I take it the na SR FSM will not work since you mentioned getting an aussie one)

Thats the only reaosn I needed to buy the extra hardware http://forums.freshalloy.com/images/graemlins/grin.gif

Thanks for your help,
-Chris