1268 replies to this topic

[Doctor Ed]

agreed

 

My bolt supplier's default for socket head cap screws is 12.9, so its become a bit of a habit of mine just decking everything out with them. but from an actual torque specification point of view 12.9 is overkill for 90% of fixation applications.

[Crabash]

Thats standard for cap heads, 10.9 is considered a special by most industrial bolt suppliers. I asked at work to get some on stock

[Nev]

I simply came to the conclusion that less stretch and higher clamping forces of 12.9 can only be better. Maybe I am wrong, but 3 or 4 years of aggressively bashing though B-roads pot holes, dips, cattle grids etc and they are still fine. Bear in mind I also have the widest/gripiest road tyres of any VX220 I know of, the most torque of any UK VX220 and also the heaviest VX220 in the UK (950 KG wet) means they get tested quite hard, and repeatedly so every few days. I am just adding my tuppence worth to reduce risk for other owners, based on genuine experience

Edited by Nev, 30 May 2016 - 05:13 PM.

[Doctor Ed]

I dont think its bad at all. infact if it looks like i need to replace mine, itll be with 12.9.

 

Im a little more concerned with the pseudo engineering knoweledge ive waded through on various lotus foums tbh!

[SteveA]

I simply came to the conclusion that less stretch and higher clamping forces of 12.9 can only be better. Maybe I am wrong, but 3 or 4 years of aggressively bashing though B-roads pot holes, dips, cattle grids etc and they are still fine. Bear in mind I also have the widest/gripiest road tyres of any VX220 I know of, the most torque of any UK VX220 and also the heaviest VX220 in the UK (950 KG wet) means they get tested quite hard, and repeatedly so every few days. I am just adding my tuppence worth to reduce risk for other owners, based on genuine experience

 

I was speaking to an expert about stress testing of suspension components and was told that UK roads are a much more aggressive test than the heavy G loading of track driving. Apparently because the travel frequencies are much more varied and violent (e.g. from a pot hole etc.)

[Doctor Ed]

Massively important update... my Chinese centercaps turned up

[Doctor Ed]

More overnight parts from China

Relatively enormous 70mm tanks, 56mm double row core
It included 2 ShinzenCo. fans but I think I'll dig out some 10" Spals I've got got kicking around here somewhere.

[Doctor Ed]

And as the kids have been sick and I've been stuck around the house...



If anyone's interested, it's Foliatec 2K hi temp, comes in a 2 part rattle can, really high pigment, flows well. good stuff to use, but be fcuked getting it off your hands

[Doctor Ed]

So... This took longer than it should've.

Basically only had to demount the ShinzenCo fans, mount the 10" Spal, and mount the IC cooler and its 8" fan. Problems popped up with how the 8" fan sat on the cooler core, fouling the crashbox. Not helped by how goddamn thick the new radiator is. So I had to rethink how I was mounting the IC cooler altogether. I ended up mounting the 8" on the top of the main radiator (flipping the fan blade turning it from push to pull). I actually still managed to line up the fan mounts on the IC cooler, so the fan sits correctly over the core, now just with a 56mm rad core sandwiched in between. Getting that all lined up top and bottom so the IC core and fan didn't foul stuff was a bunch of fun.

Anyway, couple of pics below. Rad core dwarfs the IC core now. Not that it was particularly big to begin with, but now looks tiny. Also a decent shot there showing exactly how much the new rad fills the surround to the brim.

[Arno]

Can't make it out on the photo, but just in case.. Make sure you fit some plastic/nylon/foam strips between the main rad and the chargecooler rad to limit the conductive heat transfer from the (potentially hot) radiator to the CC rad and into the CC circuit.

 

Bye, Arno.

[siztenboots]

Is that fan attached with self tappers into rad?

[fezzasus]

Is that fan attached with self tappers into rad?

 

Photo shows bolts, nuts with penny washers spreading load.

[Doctor Ed]

Is that fan attached with self tappers into rad?

lol wat?
 

[Doctor Ed]

Can't make it out on the photo, but just in case.. Make sure you fit some plastic/nylon/foam strips between the main rad and the chargecooler rad to limit the conductive heat transfer from the (potentially hot) radiator to the CC rad and into the CC circuit.   Bye, Arno.

theres self adhesive rubber edge strip between the 2 cores. i put it there mostly due to the fan now pulling through 2 cores, but itll act thermally as well. good idea!

[Gedi]

Love the centre caps Ed, where'd you get 'em from?

[Arno]

theres self adhesive rubber edge strip between the 2 cores. i put it there mostly due to the fan now pulling through 2 cores, but itll act thermally as well. good idea!

perfect!  

As you already thought of the second advantage is indeed to seal the rad(s) together so any air drawn/pushed through them will not leak out between the cracks and reduce the efficiency. Air is lazy and wants to take the path of least resistance

 

Bye, Arno.

[siztenboots]

Is that fan attached with self tappers into rad?

lol wat?
 

okay, thats how its done

[Doctor Ed]

theres self adhesive rubber edge strip between the 2 cores. i put it there mostly due to the fan now pulling through 2 cores, but itll act thermally as well. good idea!

perfect!
 
As you already thought of the second advantage is indeed to seal the rad(s) together so any air drawn/pushed through them will not leak out between the cracks and reduce the efficiency. Air is lazy and wants to take the path of least resistance
 
Bye, Arno.

A pic thereof

Also had to drill out some hose fittings as the ID was unexpectedly small. Am running 32->25->19mm hose from pump to core, keeping the 19mm stuff as short as possible to minimize the flow resistance.

[Doctor Ed]

Love the centre caps Ed, where'd you get 'em from?

the centercaps themselves are just some generic unbranded 65mm OD, 60mm ID from ChinaBay. though the fingers on the back didnt quite fit the ATS DTC without a little love from the dremel, but they were pretty close, and certainly wont come off the gel dome stickers i actually got from the UK: http://www.ebay.de/i...=STRK:MEBIDX:IT i know some will hate the lotus branding, but its 1000% better than the shitty ATS fake carbon caps. if anything looked like cheap Chinese junk, they did!

[O116]

Maybe you will need a domed centercap on the rear rims to have space for the driveshaft.