| Page: |
| Home > Help Needed / General Tech Chat > Big End bearings | |||||||
|
559 Posts Member #: 2775 Post Whore Aberdeen |
4th May, 2009 at 03:34:59pm
Just a quikie. I foolishly offered to put an engine together for a friend now Iwish I hadnt. It is nothing fancy just a 1310 with sw5 and mg head. But that is by the by. He supplied all the parts gaskets etc and I started building over the weekend. The crank is standard and I have standard bearings. I have fitted the mains etc fine and I can fit 3 out of the four big ends but every time I fit the 4th the whole engine locks up! I can move it but only with some serious force. When I take it apart everything seems fine! Any suggestions? Has anyone else had this? Iam torqueing the caps to 33ft lbs as per the haynes manual I have ( a metro one not that it should make a dfference) It is an A+ engine. |
||||||
|
Forum Mod  5933 Posts Member #: 784 9 times Avon Park Class C winner Milton Keynes |
4th May, 2009 at 03:39:25pm
Unbolt the other 3, bolt up just that one and see what happens
I seriously doubt it! |
||||||
|
4314 Posts Member #: 700 Formerly British Open Classic The West Country |
4th May, 2009 at 03:42:06pm
Have the big ends got muddled up? Isambard Kingdom Brunel said:
Nothing is impossible if you are an Engineer |
||||||
|
559 Posts Member #: 2775 Post Whore Aberdeen |
4th May, 2009 at 03:52:08pm
Big ends are all clearley marked so not muddled up. I will try unbolting the other 3 tonight. |
||||||
|
Site Admin  15302 Posts Member #: 337 Fearless Tom Fenton, Avon Park 2007 & 2008 class D winner & TM legend. |
4th May, 2009 at 04:07:19pm
Could the big end cap be 180 degrees round?
On 29th Nov, 2016 madmk1 said:
On 28th Nov, 2016 Rob Gavin said:
I refuse to pay for anything else Like fuel 😂😂 |
||||||
|
Forum Mod 5933 Posts Member #: 784 9 times Avon Park Class C winner Milton Keynes |
4th May, 2009 at 04:09:13pm
Check the big end of the rod is actually round without the bearing fitted, it could be pinching the journal
I seriously doubt it! |
||||||
 (2)[/url] by [url=https://www.flickr.com/photos/150672766@N03/]Rod Sugden[/url], on Fli) 5988 Posts Member #: 2024 Formally Retired Rural Suffolk |
4th May, 2009 at 04:24:37pm
Is the conrod the right way around (ie, the offset in the right direction).
Schrödinger's cat - so which one am I ??? |
||||||
 536 Posts Member #: 5449 Post Whore Melton Mowbray |
4th May, 2009 at 06:09:32pm
I'd agree with Tom, bearing 180 out?
On 25th Sep, 2009 mini13 said:
cool, i'll pop over with my tool and some lube, lol 1293 88.8hp 82.2ftlb 17.3 1/4 @ 78 mph Naturally Aspirated (for now) |
||||||
|
1641 Posts Member #: 178 Post Whore stowmaket suffolk |
5th May, 2009 at 06:45:06am
tags together on the big ends always looking for them bigger bunches of bannanas |
||||||
|
2497 Posts Member #: 1954 Post Whore Luton Bedfordshire |
5th May, 2009 at 12:49:58pm
with Rod, check the conrod is in correct. Edited by Mr Joshua on 5th May, 2009. Own the day
|
||||||
|
559 Posts Member #: 2775 Post Whore Aberdeen |
5th May, 2009 at 01:19:01pm
Well I got it sussed. One of the little locating lugs on the bearing would appear to be out of shape. I tired the single conrod as per Pauls suggestion (thank you) andit still bound up. I then tried a different pair of bearings in and it was fine. I swapped them back over on at a time so I could find which one was causing the problem. I found and ever so slight amount of polishing just next to where th locating tab is. It is all I can put it down to. And it looks fine at first glance. I got my money back this morning and have a new set on route from mini spares. Thanks for your help |
||||||
| Home > Help Needed / General Tech Chat > Big End bearings | |||||||
|
|||||||
| Page: |