Recommended pistons
22 March 2018, 10:42 AM
#1
Recommended pistons
Alright folks. I'm building my engine at the moment.
i have a closed deck block which is getting bored out to 92.5mm just to be on the safe side.
My crank is fine, and I have already purchased some Manley I beam forged conrods with the ARP 2000 bolts.
Could I have opinions on pistons, and where to buy them from. My block has the under piston oil squirters, and I'm getting some conflicting information on potential clash with the skirts for aftermarket pistons.
Is there a piston available which does not require machining?
i have a closed deck block which is getting bored out to 92.5mm just to be on the safe side.
My crank is fine, and I have already purchased some Manley I beam forged conrods with the ARP 2000 bolts.
Could I have opinions on pistons, and where to buy them from. My block has the under piston oil squirters, and I'm getting some conflicting information on potential clash with the skirts for aftermarket pistons.
Is there a piston available which does not require machining?
23 March 2018, 10:02 AM
#3
99% will require either removal/blocking of the suirters or a piston skirt modification.........
from memory one of the Wiseco ranges did clear but purely through luck - was not a design intention
"best" IMO are the Mahle 2618 and we have used in builds throught to over 700........
from memory one of the Wiseco ranges did clear but purely through luck - was not a design intention
"best" IMO are the Mahle 2618 and we have used in builds throught to over 700........
23 March 2018, 10:26 AM
#4
99% will require either removal/blocking of the suirters or a piston skirt modification.........
from memory one of the Wiseco ranges did clear but purely through luck - was not a design intention
"best" IMO are the Mahle 2618 and we have used in builds throught to over 700........
from memory one of the Wiseco ranges did clear but purely through luck - was not a design intention
"best" IMO are the Mahle 2618 and we have used in builds throught to over 700........
Are you able to supply the mahle, machined? If so what sort of price am I looking at.
I'm gathering its literally a few mm needs coming off the skirt
25 March 2018, 12:55 PM
#5
Normally it's when you are 'stroking' the engine you will have interference between the bore squirter's and the piston skirt at BDC due to the compression height of the stroker piston to suit the longer stroke crank.
IMHO, the bore squirter is a potential weak point in the oiling system as they can and do stick open ( designed to open at 60psi ) which can lower the oil pressure especially at idle.
+1 for the Mahle 4032 and 2618 Grade pistons.
Mick
IMHO, the bore squirter is a potential weak point in the oiling system as they can and do stick open ( designed to open at 60psi ) which can lower the oil pressure especially at idle.
+1 for the Mahle 4032 and 2618 Grade pistons.
Mick
25 March 2018, 03:14 PM
#6
Just for clarity I am running a standard crank and conrods length. Its just my piston diameter is going to 92.5mm to accommodate some liner wear.
i don't think this is classed as a stroker?
Without having a new piston to measure I'm under the impression that its only the diameter of the piston that has changed. I could be wrong and aftermarket forge pistons have a deeper skirt but unfortunately I have no experience with this.
I understand if I had changed the stroke length then I would have potential clash with the squirters.
Would I suffer in I'll effects by deleting the squirters?
i don't think this is classed as a stroker?
Without having a new piston to measure I'm under the impression that its only the diameter of the piston that has changed. I could be wrong and aftermarket forge pistons have a deeper skirt but unfortunately I have no experience with this.
I understand if I had changed the stroke length then I would have potential clash with the squirters.
Would I suffer in I'll effects by deleting the squirters?
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