Stijn!!

[livi]

Morning, meine herren.

[slodave]

Morning Markus.

[svandamme]

he's like a guerrilla fighter... nothing but hit and runs

[slodave]

No kidding...

How are Bubba and Boris?

[Rick V]

Morning

[slodave]

Morning Rick.

[Rick V]

Ya doin' okay?

[Geronimo '74]

Morning guys, (Marcus, you're neglecting this thread, shame on you!)

Originally Posted by slodave

What was wrong with the engine?

Worn exhaust valves mostly

Originally Posted by svandamme

headstuds, the rest is while he's in there and a lust for more power and fancy additions

Actually, all af my headstuds are fine. I checked, and as could be expected, I have upper steel ones and lower dilavar studs....
I could have gotten away with just a top end rebuild, but you know, while you're in there....
Headstuds will be upgraded, as will the rodbolts. Just for good measure.

I'm going back to the shop today, to see what it's going to cost me and where I have to cut back.
I'm expecting to be in way over my head and will have to ditch the idea of a 3.4, which really sucks because I wanted to build something special. It'll be a hotrod 3.2 intead....

[Rick V]

JMO, but if you live somewhere that has strict laws about speeding, the stock stuff is more than you can use. Now if you plan to Auto X or track the car, go for it, if not just build a basic 3.2.
Okay guys off to work, Ya'll have fun

[slodave]

Originally Posted by Rick V

Ya doin' okay?

It's been pretty hard. Skyler was just was so much a part of me with everything I did at home. It's hard to do anything, I picked up the cell phone and expected him to be right there, wanting to be a part of the conversation. It's going to take some time.

[svandamme]

Originally Posted by Geronimo '74

Morning guys, (Marcus, you're neglecting this thread, shame on you!)





Worn exhaust valves mostly



Actually, all af my headstuds are fine. I checked, and as could be expected, I have upper steel ones and lower dilavar studs....
I could have gotten away with just a top end rebuild, but you know, while you're in there....
Headstuds will be upgraded, as will the rodbolts. Just for good measure.

I'm going back to the shop today, to see what it's going to cost me and where I have to cut back.
I'm expecting to be in way over my head and will have to ditch the idea of a 3.4, which really sucks because I wanted to build something special. It'll be a hotrod 3.2 intead....

i thought you had told me they were effectively broken?
Dilivar was supposed to stop the studs from pulling out of the block... but they have been found to break as they age, on higher output engines...

You could probably just use regular porsche rod bolts, your engine is not going to be a high RPM nutter... Porsche bolts worked for the 911 S doing 7300 RPM.. so they should be just fine on yours...

so what's the list so far?

- Headstuds
- rod bolts
- main bearings
- piston rings
- rod bearings
- Head job
- chemicals
- SSI exchaust
- New sheet metal and air ducts for the SSI exhaust
- Having the Motronic tuned for the new setup

That's your 5 K right there. EDIT, probably more like 6.5K

What else are you thinking off?
MAF ?
hot cams?
don't forget, that requires new or refurbished rockers (i'de opt for new rockers)

[svandamme]

Originally Posted by slodave

No kidding...

How are Bubba and Boris?

NapForce 1 & NapForce 2 are in the hangar , taking naps.

[svandamme]

Originally Posted by slodave

It's been pretty hard. Skyler was just was so much a part of me with everything I did at home. It's hard to do anything, I picked up the cell phone and expected him to be right there, wanting to be a part of the conversation. It's going to take some time.

I know what you mean, Bubba was sick once, and at the vet for 2 weeks...
each day, coming home from work.. No Bubba waiting for me at the door... it felt like i was in a strange home... I think the proper term is "feeling gutted"

[Geronimo '74]

Originally Posted by svandamme

i thought you had told me they were effectively broken?

I thought they were, but the oily goo on the bottomside which I believed to be due to a broken stud, was in fact from a oil return tube. Studs were fine.

Originally Posted by svandamme

so what's the list so far?

- Headstuds
- rod bolts
- main bearings
- piston rings
- rod bearings
- Head job
- chemicals
- SSI exchaust
- New sheet metal and air ducts for the SSI exhaust
- Having the Motronic tuned for the new setup

That's your 5 K right there.

What else are you thinking off?
MAF ?
hot cams?
don't forget, that requires new or refurbished rockers (i'de opt for new rockers)

I have the LB1 kit From FVD (hot wire system)
And I would like to change the cams as well, or have mine reground.
AND I wanted all this with 3.4 P/C's, balancing of crankshaft, rods and cilinders, knife edged crank, shot peened rods, case boat tailed, cilinders mooned, intake extrude honed, lightened flywheel.....
Oh yeah what I'm definately doing is a bored out throttlebody. ( by FVD)

[svandamme]

ok, what cams are you thinking off?

Your cam's define everything, what kind of pistons you can use... what kind of power band, and redline you'll need for the engine...
and what other costs you'll need to make (head work, valve springs)

I'm sure you can get new cams for a 3.2.. not to overly convinced about regrinding (hard welding first) them...

Peter knows more about this, i think he had hardwelded , re-ground cams, the new rockers were pitted in i think under 10 000 km's...

[Geronimo '74]

I was also leaning towards new ones rather than regrounding the ones I have.

How about 964 cams, these require only minor adapting and not even to the lobes.
Or S cams.
Actually, Cams are still a bit a mystery to me, so I can use all the advise i can get.

[svandamme]

S cam's?
you're not talking early S cam profile are you?? those , will not work with your engine, not without some serious changes.


Did you say you already bought the hot wire kit???
Why??
performance gain.. bang for buck it delivers next to nothing..

[Geronimo '74]

S-cams no good?? See, i didn't know that.

The hotwire kit I already bought over a year ago....
I like that the air going in has next to no resistance, no flappy flaps to push aside.
Throttle response is noticably better. HP gains, I dare not say.
I bought it kinda cheap.

[Geronimo '74]

In Wayne's rebuild book he advises S cams for the 3.4, but that is with a CR of 9.8 to 1.
I guess for a CR of 10.3 to 1 they give too much lift then.

[svandamme]

S cams are high lift , high duration..

So the valve, is up high, for a long time.
That requires pistons , with valve pockets
Without them, the piston comes up while the valve is still not down yet... collision insues.


The high lift / duration also causes overlap, causing a burp in the intake..
CIS meter plates don't like ... not sure that a Hot wire maf will like it either...

Then there's the power curve S cam's produce power higher up in the rev range...
below 4500 rpm , they are lazy... And they keep going up to 7000 + rpm.. that's more then your engine does now..

Your engine, has a 74.4 mm crank... it's a long stroke engine
Piston speeds are much higher per RPM, they need to accelerate faster, and travel farther within each rotation...

This is why i am short stroking to 66mm, so i can rev it up

for each RPM, a piston has to
accelerate
travel the stroke
decelerate
reverse accelerate, travel, delerate...
repeat

So yours with 74.4 mm to travel, has to travel 12% more distance, per revolution
Might not sound like much at 500 RPM...


But each increase in RPM will require even higher speeds to travel the distance
Above your stock Redline things will get scary real fast in terms of the G forces (no pun intended) that act on the piston, rods and rod bolts...

It's possible... don't get me wrong... but big displacement long stroke high revving engines.. costs money

You could put in S cams, and not rev it up... but what's the point then... better off getting cam's that are better suited for your rev range..
Wayne's book, don't have it with me... but does it say you can just drop in the S cams on an other wise stock 3.2 engine?? Or does it come as a hot tip for somebody who's building an other wise unlimited budget rebuild? New rods, arp bolts, valve springs, head work, Individual throttle bodies, custom pistons...

The compression is not the issue, that's down to piston design...But valve pockets mean less compression, to compensate the dome has to be bigger... bigger dome means you'll need twin plugging..
everything affects everything, and everything will cost you big money to get.