Wiseco pistons + oversized valves + BC S3 cams - SRT Forums

uncommon© · 11-04-2009, 05:30 PM

Anyone running this setup? I'd imagine someone has to be.

I just bought JE 8.5 pistons but after doing some research I've read that these won't clear oversized valves without a little machine work due to the small valve reliefs. I think I'm going to ditch the JE's for out of the box wisecos and want to confirm that they'll clear with oversized valves & big cams.

Also, anyone running over sized valves, big cams and CP pistons? I was also looking at those.

**Monster** · 11-04-2009, 05:44 PM

I read Cp's are the way to go and have larger relief cuts. Drastic is running a pretty radical cam with his cp's no machine work. Og Crower S2's if I remember.

RuizGT · 11-04-2009, 06:40 PM

Quote: Originally Posted by Monster

I read Cp's are the way to go and have larger relief cuts. Drastic is running a pretty radical cam with his cp's no machine work. Og Crower S2's if I remember.

Heard the same thing, so I ordered CPs.

matthew00029 · 11-04-2009, 06:41 PM

I'm pretty sure the wiseco's won't clear either. I have heard they will if you don 't adjust the timing but once you start doing that you will run into clearance issues. I say if you want to do drop in's stick to the CP's like stated already.

reed32 · 11-04-2009, 06:45 PM

Quote: Originally Posted by Monster

I read Cp's are the way to go and have larger relief cuts. Drastic is running a pretty radical cam with his cp's no machine work. Og Crower S2's if I remember.

Drastic is running rage-tek 7.2.1 pistons and c3 cams. his old set up was cp pistons and c2 cams.

cp pistons is and weisco are the only pistons i would run in my cars

**Monster** · 11-04-2009, 06:47 PM

Quote: Originally Posted by reed32

Drastic is running rage-tek 7.2.1 pistons and c3 cams. his old set up was cp pistons and c2 cams.

cp pistons is and weisco are the only pistons i would run in my cars

That's right I forgot he did a second build with the rage pistons.

Adionik · 11-05-2009, 12:34 AM

Quote: Originally Posted by uncommon©

Anyone running this setup? I'd imagine someone has to be.

I just bought JE 8.5 pistons but after doing some research I've read that these won't clear oversized valves without a little machine work due to the small valve reliefs. I think I'm going to ditch the JE's for out of the box wisecos and want to confirm that they'll clear with oversized valves & big cams.

Also, anyone running over sized valves, big cams and CP pistons? I was also looking at those.

My car has had JE 8.5.1 with BC3 cams and OS valves and currently has CP 8.5.1 ....0 issues.

I thought JE's would have clearance issues too but apparently not? Search "Srtkid" for more info..

tcglass1 · 11-05-2009, 03:26 PM

Quote: Originally Posted by uncommon©

Anyone running this setup? I'd imagine someone has to be.

I just bought JE 8.5 pistons but after doing some research I've read that these won't clear oversized valves without a little machine work due to the small valve reliefs. I think I'm going to ditch the JE's for out of the box wisecos and want to confirm that they'll clear with oversized valves & big cams.

Also, anyone running over sized valves, big cams and CP pistons? I was also looking at those.

Just finished a friends car the other day, it had CP's in it, BC stg3's, and a TKMS head. No issues and the cams have been all over the place. I know that CP makes Brian Crowers pistons too. From my understanding the only difference is the box they come in...

my stroker has CP's in it, with Crower stg 2s.

I know another friend here has Weisco's in his motor, with an FNF race head, and BC stage 3s, no issues that I know of..

turbojonsrt4 · 11-05-2009, 05:11 PM

I'm building a head this winter. I'll probably stick with the crane 16's I have now, but I plan for a decent port job and over sized valves. Hope my Wisecos don't interfere with this plan.

jojo · 11-05-2009, 05:24 PM

i dont know about the srt4 pist but i've had cp an je busa pistons side by side before. the cp is alot nice pist and it was a couple grams lighter.

boots · 11-05-2009, 05:26 PM

You could call wiesco and give them your specs and I'm sure they can tell if they will clear or not. I thought the wiesco's had good valve reliefs cut into them? I know when I called wiesco about custom 10.1:1 pistons they said that they would clear with a head that has +2 exhaust, +1 intake, and crane 16's.

turbojonsrt4 · 11-05-2009, 06:29 PM

Quote: Originally Posted by boots

You could call wiesco and give them your specs and I'm sure they can tell if they will clear or not. I thought the wiesco's had good valve reliefs cut into them? I know when I called wiesco about custom 10.1:1 pistons they said that they would clear with a head that has +2 exhaust, +1 intake, and crane 16's.

That's my plan, hope the 8.8:1's clear.

uncommon© · 11-05-2009, 06:33 PM

I think I've made up my mind. Ditching the JE's and picking up CP's. Thanks for the input guys.

CP pistons, crower rods, DCR race head and BC s3 cams. Now I just gotta decide if I wanna make the switch from AEM F/IC to DSP.

turbojonsrt4 · 11-05-2009, 06:37 PM

I think I've made up my mind. Ditching the JE's and picking up CP's. Thanks for the input guys.

CP pistons, crower rods, DCR race head and BC s3 cams. Now I just gotta decide if I wanna make the switch from AEM F/IC to DSP.

No brainer.

uncommon© · 11-05-2009, 06:39 PM

Quote: Originally Posted by turbojonsrt4

No brainer.

I know, I know. I just have a lot ahead of me. I'm ditching my -6an fuel system for a bosch 044 fuel pump & -8an fuel system. Building the block and a bunch of other small projects. I gotta decide if I want to add another $800-1000 for a DSP on top of an already $5,000+ build.