damien roe

iTrader: (1)

seeing theres not alot going on tonight i alway's wanted to ask this whats the deal with nikasil liners whats the cost's involved with these etc and whats the benefits

cheers damo

Rsmat

iTrader: (2)

As above I'd like to know this... Cos one day I might built a big power YB.

LHD220Turbo

iTrader: (4)

they are wear resistant and they cope with heat better

only needed in big bhp applications

saph4be

They cost around 2k they handle massive cylinder pressure as well as reducing friction

LHD220Turbo

iTrader: (4)

certainly not cheap, but didnt think it was that much!

saph4be

Thinking about it that may include long studding as well but I have had a few beers lol might be about 1600 got liners only?

LHD220Turbo

iTrader: (4)

lol, beer talking! to be fair it might well be 2k! i really dont know

saph4be

I been Ill most off Xmas/new year so I got loads off beer to get through but sure 2k ain't far off!

v man

and there are two different types

wet liners and dry

wet liners protrude the water jackets i belive

jimbo or mart are the people to ask

Chip

iTrader: (3)

If you borewash the engine a lot (like with some forms of antilag) they are a lot better at resisting excessive wear from the rings onto the bores than the standard bored and honed finish.

Couple of different ways of doing them, sometimes its a very thin liner, sometimes they open the block right out and use much thicker liners that basically replace the hole center of the block.

JamesH

iTrader: (21)

Interesting thread this!

Jay,

iTrader: (4)

2K isnt a bad ball park price , capricorn in basingstoke who incedently do most of maclaren f1's machining do nikasil liners to yb's ect ! they do it correctly I.E the block is machined correctly to accept the liners correctly so there eual thickness all around the block rather than squashed in so the bores go oval then bored to get them round and sometimes uneven bore thickness

Warren

seen this out in SEMA, there is a company in the UK doing these

Chip

iTrader: (3)

The darton sleeves are very popular with the honda boys when going for big power.

Not heard of them being used in a YB yet though.

graham c

iTrader: (5)

mite be better getting a mk motorsport block spacer like martin use,s

DAN400

iTrader: (3)

i always thought you could nt bore a nikasil linered block??

Chip

iTrader: (3)

You cant, you'd go through the lining, maybe Jay is getting confused with normal liners not nikasil ones.

Cragrat

iTrader: (4)

Mate of mine runs nikasils in his vtec 1.8 turbo running 360 bhp

Bugger all torque but then his civic wieghs Bugger all too

Chip

iTrader: (3)

Got anymore info about your mates, im soon to be turboing a 1.8 vtec myself sop the more examples I see beforehand the better.

Personally im looking to keep the torque down to around 200lbft and make about 300bhp, although I may let it make a little more torque in the higher gears possibly, wont make the final decision till im actually mapping it.

GARETH T

Where are you limiting the torque mate? Traction issues?

Chip

iTrader: (3)

Kind of, I just like how flat torque curves drive on a FWD car, dont like a big surge in midrange torque and then dieing off at high rpm, can lead to wheelspin and then once you stop it spinning it then feels flat cause the torque has died off etc, sooner just have a more or less flat curve that just pulls cleanly through.

Will be a case of trial and error to decide what feels best.

Cragrat

iTrader: (4)

Have texted him for as much info as possible on it

Chip

iTrader: (3)

Cool, would be good to see a photo of how he has done the turbo, im pretty limited on space so looking for inspiration.

ajamesc

Whats a block spacer thats changes stroke and capacity got to do with some one asking about fitting nikasil linners Plus when building a mega bhp engine 1 head gasket is enough to worry about why on earth would you wont 2 lol

Chip

iTrader: (3)

You think Martin used 2 headgaskets? LOL

Paul_RS

iTrader: (4)

I though he just stacked 10 of them together to make his bores longer?

ajamesc

Gasket between head and spacer then gasket between spacer and block i presume? Unless im missing some thing?

Chip

iTrader: (3)

Its not some pikey RST

The spacer becomes an integral part of the block with the liners going right through it, thus adding a lot of extra rigidity to the top of the block as well as increasing the height of the block to allow a longer stroke and longer rods at the same time.


Thats the block with the spacer on.

ajamesc

lol i guess you learn some thing every day lol ive never seen the set up just herd peolpe talking about this spacer lol so presumed!

Chip

iTrader: (3)

Perfectly logical assumption to make TBH mate.

But if you did it that way, the piston rings would have to pass the first head gasket, as bear in mind we're talking nearly an extra inch here to increase the height of the block, not a spacer to increase the size of the chamber to drop compression.

ajamesc

plus there must be some form of gasket/sealant between the block and spacer as the water ways will go through it?

Chip

iTrader: (3)

Lots of engines use two machined flat surfaces to seal against oil and water leaking out, not sure if martin has relied on just a good machined fnish that simply has nowhere for the water and oil to go or if he has sealed it in some other way, one option would be to tube through both parts for example.
Ask him, he might surprise you with an answer, he isnt as secretive as some people think IME

B13 JUS

iTrader: (24)

When there is a full sleeve fitted, is it a steel sleeve which is plated with nikasil or us the full liner nikasil?
Can you get your standard bores coated with nikasil?

lacey

My liner cost me Ł1200 by mountune but that was a long while ago

Chip

iTrader: (3)

Its a nikasil coated iron liner.

It is possible to coat the bore itself straight onto the iron of the block, but I suspect the cost in doing so for a one off would be high.

p.s

Lots of modern ally blocks are nikasil linered as standard, including the bmw ones that went wrong a lot, lol

saph4be

Iirc Martin explained how it was sealed! And I delive it was machined to except o rings between spacer and block.

andy130

iTrader: (2)

say if a valve dropped an marked the liners, does that mean it needs new liners fitted? do the liners weaky if you bored them?

pauljh

iTrader: (1)

Here's some pictures of mine, you also need 10 long studs and if you are running a 4wd coolant pump you will need that modified as well as the impellar will fowl 1 of the long studs in side the block.

Rsmat

iTrader: (2)

Very nice...

Sonic Boom

iTrader: (11)

Looks good
Rich