Looking for new pistons

[Far2002]

Hi All 

 

i need to change my piston since one of my cylinder is in bad condition.

i got a bmw 2002 base with a 121TI head.

Does anyone use Ti pistons or wiseco : https://races-shop.com/engine-parts/105838-forged-pistons-wiseco-for-bmw-2002-m10b20-20-ltr-8v-100-1121-head.html 
And are they compatible?

Thanks for your Help 

regards

 

farid 

 

[Preyupy]

It depends on what you are looking for. If this is just a street car that you want to have some fun with I would recommend the Ti pistons ( make sure you get the right done design for the 121 head!) I would also recommend CAST pistons for a street car. Forged pistons grow more with heat so they have to be set up with more clearance, you really should warm up an engine with forged pistons before you drive off.  
 

the other thing you didn’t mention is what size you need. 

[Mike Self]

14 minutes ago, Preyupy said:

the other thing you didn’t mention is what size you need. 

Based on that pictured cylinder wall, at least first oversize...

 

mike

[Far2002]

In fact forged piston are cheaper and can be easily find On web compare to the cast 
I put a picture of my head 

I think I need 89mm +0,5mm
 

thanks

 

farid 

[Son of Marty]

Don't buy pistons until your shop tells you the size or better yet has done the boring.

[irdave]

9 hours ago, Son of Marty said:

Don't buy pistons until your shop tells you the size or better yet has done the boring.

 

Yeah, or just AS BIG AS YOU CAN.  I mean, why not?

[Far2002]

58 minutes ago, irdave said:

 

Yeah, or just AS BIG AS YOU CAN.  I mean, why not?

Not too big in case i need to do it again...

[otisdog]

Check the parts for sale forum

[Far2002]

11 minutes ago, otisdog said:

Check the parts for sale forum

Not easy i live in France 

[jireland2002]

I strongly suggest - Do not bore the block until you have the pistons in your hands.

[Far2002]

4 minutes ago, jireland2002 said:

I strongly suggest - Do not bore the block until you have the pistons in your hands.

This is exactly what i have got in mind because i think the bore should be adapted to the pistons not the opposite

['76mintgrün'02]

12 hours ago, Son of Marty said:

Don't buy pistons until your shop tells you the size or better yet has done the boring.

 

3 minutes ago, jireland2002 said:

Do not bore the block until you have the pistons in your hands.

 

Yeah, what they said!   

[Schnellvintage]

I got these from Maximillian, customer street car.

 

[Mark92131]

It's your lucky day...

 

Mark92131

 

 

[Conserv]

3 hours ago, Far2002 said:

Not too big in case i need to do it again...

Smart man! ?

 

Regards,

 

Steve