Fordmods Logo

advice needed for my 302w 

 

Page 2 of 2 [ 19 posts ] Go to page Previous  1, 2

 
Posted: Sun Jan 07, 2007 4:54 pm 
Tyre Shredder
Offline

Posts: 304

Joined: 5th Sep 2006

Location: christchurch
New Zealand

do you guys all run forged pistons and rods? anyone use those hypotectic silicon pistons that are on ebay for $190AU ?

what are the standard rods good for with ARP bolts?

 

_________________

http://www.retrotech.co.nz

Top
 Profile  
 
 
Posted: Sun Jan 07, 2007 10:17 pm 
Tyre Shredder
Offline

Posts: 304

Joined: 5th Sep 2006

Location: christchurch
New Zealand

oh and what size pistons do I want for a street engine to run on 98? +30 flatop pistons with valve reliefs?

 

_________________

http://www.retrotech.co.nz

Top
 Profile  
 
 
Posted: Sun Jan 07, 2007 10:40 pm 
EFI Guru
Offline

Age: 59

Posts: 4359

Joined: 5th Nov 2004

Gallery: 28 images

Ride: 351 Vogue,XH 5.0,'17 5.0 Stang

Location: Perth
WA, Australia

There are many engines making more than 400hp that run hypereutectic/cast pistons.
Personally I'd go forged.
Whether you need pistons with valve reliefs at a certain depth depends on your engine/camshaft and heads. Most stock type replacement pistons come with valve reliefs but usually only for stock valve sizes.
If you run iron heads with street fuel you should stay under 10:1 comp. If you run alloy heads you can go safely to 10.5:1 or higher but your cam choice also affects this.

Pete.
Top
 Profile  
 
 
Posted: Mon Jan 08, 2007 4:33 pm 
Tyre Shredder
Offline

Posts: 304

Joined: 5th Sep 2006

Location: christchurch
New Zealand

Taken heads off and you were right.. the pistons don't even have valve cut outs. Bores don't look too bad though and I can still see the honing marks. Every bore appears to be sleaved though which is weird.. i'm not sure but it certainly looks like it.

I spoke to my engine builder today and he said he has had terrible results with hyperuetetic pistons. He recommended just using sealed power USA cast pistons which are good enough for the majority of street power v8's he builds. Or I forgies are all good but he reckons I don't really need them for a street 300-400hp low reving 5.0L. Rods are all good too with ARP bolts.

 

_________________

http://www.retrotech.co.nz

Top
 Profile  
 
Display posts from previous:
Sort by  
 Page 2 of 2  [ 19 posts ]  Go to page Previous  1, 2

Who is online

Users browsing this forum: No registered users and 33 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

 

 

It is currently Thu Dec 26, 2024 6:14 am All times are UTC + 11 hours

 

 

(c)2014 Total Web Solutions Australia - Australian Web Hosting and Domain Names