Jump to content

Nicasil foringer?


Flügel Cossie

Recommended Posts

Fordel: Sterk blokk som tåler masse.

Ulemper: Hyppige overhalinger med stempelringer og etterhvert stempler.

Konklusjon: Ikke noe man putter i om man ikke trenger det.

Prisen tror jeg varierer endel. Du trenger jo nye stempler og ringer som fort tar med seg råder og bolter og lager og osv...

'78 Ford Escort Mk2 Gp.2 spec. med YB maskinist

 

eb00ad32.jpg

Link to comment
Share on other sites

Hva som menes med "hyppigere service" er jo relativt

Jeg har kjørt ca 11000 med min nå, og den er helt fin ennå ihvertfall.

Signatur kan være på inntil 5 linjer i normal skriftstørrelse, eller bilde/banner-størrelse 100x800 pixler

Link to comment
Share on other sites

Hva er egentlig Nicasilforinger?

 

Sakset fra Wikipedia..

 

Nikasil is a trademarked electrodeposited oleophilic nickel matrix Silicon Carbide coating for engine components, mainly piston engine cylinder liners. It was introduced by Mahle in 1967, initially developed to allow rotary engine apex seals (NSU Ro80 and C111) to work directly against the aluminum housing. This coating allowed aluminium cylinders and pistons to work directly against each other with low wear and friction. Unlike other methods, including cast iron cylinder liners, Nikasil allowed very large cylinder bores with tight tolerances and thus allowed existing engine designs to be expanded easily, the aluminium cylinders also gave a much better heat conductivity than cast iron liners which is an important factor for a high output engine. The coating was further developed by US Chrome Corporation in the USA in the early 1990s (under the trade name of "Nicom") as a replacement for hard-chrome plated cylinder bores for Mecury Marine Racing, Kohler Engines, and as a repair replacement for factory-chromed snowmobiles, dirt bikes, ATVs, watercraft and automotive V8 liners/bores.

 

Porsche started using this on the 1970 917 race car, and later on the 1973 911 RS. Porsche also used it on production cars, but for a short time switched to Alusil due to cost savings for their base 911. Nikasil cylinders were always used for the 911 Turbo and RS models. Nikasil coated aluminum cylinders allowed Porsche to build air-cooled engines that had the highest specific output of any engine of their time. Nikasil is still used in today's 911s with great success.

 

Nikasil was very popular in the 1990s. It was used by companies such as BMW, Ferrari and Jaguar Cars in their new engine families. However, the sulfur found in much of the world's low quality gasoline caused some Nikasil cylinders to break down over time [1], causing costly engine failures.

 

Nikasil or similar coatings under other trademarks are also still widely used in racing engines, including those used in Formula One and ChampCar. Suzuki currently uses a race-proven nickel phosphorus-silicon-carbide proprietary coating trademarked SCEM (Suzuki Composite Electro-chemical Material) to minimize cylinder size and improve heat dissipation, e.g., on the engine of the Suzuki_TL1000S and Suzuki DL650 V-Strom and Hayabusa motorcycles [1].

 

Engines using Nikasil include:

 

* Chevrolet LT5 engine, designed by Lotus and used exclusively in the Corvette ZR-1

* Chevrolet Vega 2.3l, and 2.0l Cosworth fours

* Citroën Visa twin

* Citroën GS birotor wankel engine made by Comotor

* BMW M52 I6

* BMW M60 V8

* BMW R80GS, as measure to reduce weight over cast-iron lined cylinders

* Ferrari F50 V12

* Ford RS200

* Honda RS125R [2] - cylinder lining

* Honda RS250R [3] - cylinder lining

* Honda XR650R

* Jaguar AJ-V8, 1997 - 2000 (XK series VIN range 001036-042775, XJ V8 series VIN 812256-878717) [2]

* KTM LC4

* Lambretta TS1

* Lotus Esprit Turbo 2.2

* Maserati Biturbo 2.0 V6 Engines

* Moto Guzzi 850 T3 and derived engines

* NSU Ro80

* Porsche 912 engine ( engine in 917 car, not to be confused with the Porsche 912 car )

* Porsche 911 1973+ (excluding some 1975-1978 911S)

* Suzuki RGV250

If NISMO stands for Nissan Motorsports, does HOMO stand for Honda Motorsports???

Link to comment
Share on other sites

Hva er egentlig Nicasilforinger?

 

Det er løse "hylser" som du bruker istedetfor de orginale sylinderne i motorblokka. Borrer ut ett større hull og dytter de ned, og de funkerer som sylinder

Tåler masse mer og sparer som oftest blokka ved ras. Da er det bareå dra de ut og sette inn nye.

53e5aeb1.jpg

 

Er det nåken som vett hvem som kan montere disse og ka pris det ligger på?

Jeg kan montere det. 1500 kroner.

Edited by Breda

Signatur kan være på inntil 5 linjer i normal skriftstørrelse, eller bilde/banner-størrelse 100x800 pixler

Link to comment
Share on other sites

Jeg går ut fra at vi snakker om våte foringer her?

 

det kan man velge selv de våte foringene er tykkere så man må borre ut i vannkanalene, det er mer arbeid med maskinering. De andre er som vanlige foringer som ikke trengs så mye maskinering. Hva som er best? Det kan diskuteres... :)

Link to comment
Share on other sites

  • 4 years later...

Hvor mye borr må man ha for nikasil? Om blokka nærmer seg 92mm. Og man kan gå å

Maskinere ut til nikasil da for å prøve det.. snakker om å ta ut 700+

1986 Ford Sierra 3dr Sierra Cosworth hvit.

x 1992 Escort Cosworth Mallard RS500 insug,T4 turbo,ic,Secs,Arp tanker etc.
x 1991 Sierra Cosworth 290chip Meganta rød 4x4.

x 1981 Ford Granada 2.0L Gullbrun. spiker.

Link to comment
Share on other sites

Hvis du ser bildet mitt tidligere i tråden, så er det 92mm innvendig i foringen, så da er kanskje hullet i blokka 95mm eller noe.

Signatur kan være på inntil 5 linjer i normal skriftstørrelse, eller bilde/banner-størrelse 100x800 pixler

Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
×
×
  • Create New...