Snowy_Astra

Vauxhall bearings, says 'upper' on four of the bearings and 'lower' on the other 4

Just wondered if the 'upper' ones go on the rod, and the lower on the cap?

Ta

FordFans

Got it in one mate

Snowy_Astra

Wicked, cheers

I thought i would double check just incase, pistons and rods are going in today Can't wait.

Pics later

Have a look at the counter sunk caps, i had them done properly, none of this 'self centering with a power drill' bollocks

They so lully, and perfect too! had the ARP bolts measured aswell, again, perfect, and handy to know so i can measure them at the next rebuild to see how much they tretched

http://img333.imageshack.us/img333/3850/cimg22053it.jpg

Anonymous

The clue on the 20XE/C20LET rods should be the fact there is a hole in the Rod side of the bearing, designed for oiling the underside of the piston as a very crude attempt at under piston cooling mate.

Snowy_Astra

Shite, Chip, u made me think about something.

My big end bearings had no holes in them! yet the rod had a hole right through it! Shouldn't my big end shells have holes in the upper one?! How the fuck do they stay lubricated!?!?

Anonymous

They stay lubricated because they are fed from an oilway in the crank.

But the lack of a hole means you will disable the oil spray from the rod.

Thats NOT good mate, unless you have installed squirters like mine?

Stu @ M Developments

iTrader: (12)

This is a very graphic case of "A little knowlege is dangerous"

If chip hadnt happened to mention that, you would have lost that engine once you got it nice and hot

Anonymous

Indeed Stu, but at least Spence knows when he needs to check things normally

Spence, you have a few choices here mate:

Get some bearings with the holes in
Drill your bearings
Install squirters


Basically the bearings you have are what people like SBD sell as an upgrade on the N/A engine, where the squirter isnt needed due to the lack of heat in the piston.
Drilling them is acceptable, but awkward and obviously you MUST chamfer it off after to make sure there is no sharp edge, i would not recomend this option.

Installing the squirters is a fantastic idea, they have pressure switches in them (spring loaded ball) so they will never starve the crank of oil and yet will still keep the pistons nice and cool, in fact they flow MORE oil in good pressure situations than the standard holes do.

I would go for that option personally.

I know someone who will install them for you for a ton including the supply of the nozzles, but it has to be done into a bare block and its your responsibility to ensure the swarf is properly cleaned out afterwards (it will come back cleaned anyway, but only quickly)

Snowy_Astra

Fuck it The pistons and crank and everything is already in

Did the LET have holes in the big end shells? I got the 1.7 D/TD bearings see.

I'm not looking to run more than 250bhp now, will i still need to sort it out? The crank is all torqued down now, and i will need new bolts, reseal the end caps, its long

Anonymous

Why will you need new bolts?

Yes the LET had them as standard!

What tool told you to put the 1.7TD bearings in it?

Snowy_Astra

The tool was on Migweb IIRC, they said the lead copper bearings are much better.

I also recall mentioning that it will be turbocharged, so anyone who knew what they were on about would have picked up on the under piston cooling problem using the shells i got now.

Ah well, shall i drag the pistons out again and fit the new shells? Or shall i fit them whilst still inside the engine? There seems to be plenty of space to mess about with

P.s the crank bolts i got are single use apparently

Anonymous

I dont see how a crank bolt can be single use.

Crank and rod bolts are always torqued to before their point of elasicity.

did you accurately measure the length? If so you can check them.


Failing that, an ARP stud and nut kit like mine is a good investment at under 100 quid.


you can easily change the bearings with the pistons in place.

you cant install the squirters though due to risk of swarf getting somewhere it shouldnt, block must be stripped first, and thoroughly cleaned after.

Snowy_Astra

Cheers Chip

I just been down SBD as i only live 10 minutes away, and i asked them about the bearings i got being run on a LET and they said it will be fine and that all their engines they build use those bearings

But i don't want to tempt fate, so i may just go down vauxhall and get some as SBD don't stock the ones with the hole

I'm at a point now where i have 3 differn't opinions, and to be honest, i trust your judgement over SBD and that tool on mig from ages ago.

Anonymous

Most of SBD's engines are using steel rods which have "buckets" on the should of the rods to throw oil up at the piston.

Maybe thats why they dont feel the need for the standard squirters?

Put it this way, go and try and find me ANY standard turbo engine without some form of spray, cause the only one i can name is the metro turbo with a heady power figure of 93bhp

Stu @ M Developments

iTrader: (12)

Im with chip 100% on this one pal. They are a necessity IMO.

Snowy_Astra

lol yeah good point, i didn't mention that they are standard rods. I'll E-mail them again to tell them and see what they say just out of curiosity

Anyway, off to vauxhall i go

Anonymous

Be interested to see their opinion

They DO know what they are on about down there, they've built some serious motors, although mainly N/A they have done turbo stuff for motorsport too i know (not on standard rods though)

Snowy_Astra

Thats what i thought when i went there, I've not 'heard' too much about SBD working with turbocharged engines, all i've ever heard them do is throttle bodies and such like.

I'll see what they say, like you said, would be interesting to know.


EDIT: Think they answered the question in the first E-mail to tell the truth, even mentioning their rods

Snowy_Astra

Well, here's the reply....which sounds like they arn't 100% sure now