Building a 7 bolt... What clutch?

[AJ]

Just build the 7 bolt, remove a bolt and call it a 6 bolt. ;) That's how Shane keeps his going. lol

[Pimpin Dsmstyle]

Well I picked up a 7 bolt motor from a buddy, Eagle rods and Ross pistons. Just going to build it for fun and see what can happen before the end of the year. So I been told by a member here that I need a Twin disk no matter what. Personally I think the DXD clutch I have now will be just fine, maybe get the 6 puck clutch from Southbend to hold more power, but running a twin disk is going overboard in my opinion.

Also this person thinks that all and every 7 bolt that makes power will crank walk no matter what. So if its going to get CW no matter what then why should I get a twin disk to slow the process down? I think thats a broad statement for the people that have made a lot of power on 7 bolts and yet they havent crank walked. Any opinions?

Personally if every 7 bolt walked then there would be recalls and no one would have one in their car yet start adding mods so they make power. There are a few people that have stuck a lot of money into their car and run 7 bolts. Look at Shane, he's making great power on his 7 bolt and he has little to nothing in it for machining. Brian made good power on his stock 7 bolt before it crank walked but it was stock so I can see why it happened. So I dont understand how that statement can be correct.

I want to hear some opinions first before I start this project. Am I wasting my time?

Discuss...
Jason found the blue print for that engine, it spun a bearing, never walked! He tried to fax, but someone was answering the phone. CALL JASON SO HE CAN FAX BLUEPRINT. Bore size-3.376 Net Dia. 3.371
C.H. 1.375
Ring Grooves 1.5mm 1.5mm - 3mm
Ring Lands .350 .185 .085
PIN .866 2.500 DBL
Net dome cc's: -12.10
Dome height 0.000 Dish Depth: 0.123
Int V.P. Dia. 1.400 Depth: 0.120
Exh V.P. Dia. 1.300 Depth: 0.080

These are the #'s from blue print. Ross Racing Pistons spec sheet.

[Pimpin Dsmstyle]

Jason found the blue print for that engine, it spun a bearing, never walked! He tried to fax, but someone was answering the phone. CALL JASON SO HE CAN FAX BLUEPRINT. Bore size-3.376 Net Dia. 3.371
C.H. 1.375
Ring Grooves 1.5mm 1.5mm - 3mm
Ring Lands .350 .185 .085
PIN .866 2.500 DBL
Net dome cc's: -12.10
Dome height 0.000 Dish Depth: 0.123
Int V.P. Dia. 1.400 Depth: 0.120
Exh V.P. Dia. 1.300 Depth: 0.080

These are the #'s from blue print. Ross Racing Pistons spec sheet.
PS, CAREFUL INSTALLING THE PISTONS. Dont want to have to order those dahm rings again for these custom pistons.

[JET]

Crank is perfect... One of the rods was scored but I have a different one already. I have the conversation if you want it Josh~
It spun a rod bearing but the crank is perfect? What scored the rod bearing then? Why wouldn't you just replace the rod bearing, unless the bearing welded itself to the crank and actually spun inside the rod. In that case, the crank would definately not be perfect. Has the crank been ground undersized possibly?

I would stick with the DXD and see if it will hold the power. Also install a clutch bypass switch so you don't have to have the clutch in on startup.

[Pimpin Dsmstyle]

Im pretty sure post #12 and #13 werent me (josh). I dont know exactly what that shit is about?

[Pimpin Dsmstyle]

The crank is not perfect? The rod bearing spun and was thin as hell along with a burnt eagle rod after the accident, but did not melt to the crank. I should know because it was my engine and I did this. I basically just went 100% wot when oil was not normal temp and this is what caused the failure. Stupidity. The crank was polished and re-done, but when he builds it he still needs to install rod bearings and check clearances to see if in spec. Needs to be balanced as well. Then what the heck, give it a try!

[Pimpin Dsmstyle]

Dude Jason! Post Under Your Name! I Dont Know How You Have My Pass But Holy Shit This Is Confusing.

[Pimpin Dsmstyle]

Dude Jason! Post Under Your Name! I Dont Know How You Have My Pass But Holy Shit This Is Confusing.
Wait, who am I!

[TurboDomestics]

What the hell is going on here!!

Since we're on the subject of CW, i wanted to clear something up, 1G 7 bolts dont walk, right? SO whats wrong with them other than the smaller rods? If you built a 1g 7 bolt, it would be just as strong as a 6 bolt right? or am i completley wrong

[dumb_ricer]

My friends 93 TSi AWD crankwalked, but that is a rare occurance.

I could have sworn I read something that there is a lack of tranny mounts supporting the 2g transmission in the right places, or not supported at all. I havent worked on many 2g's before, but I do remember reading something about that.

No one knows why 2g 7bolts walk so often, and no one probably ever will.........