help with new motor and top swap

**98regal** · 03-16-2012

so i have got the new motor and the old motor side by side and see the obvious stuff to change and have the procedures from boost and i was in the middle of tear down with new n/a 3800 when i removed valve covers ther was a hardish build up EVERYWERE i used a screw driver to actually find the bolts to remove the heads got them out and a freind said i need the rockers and the puch rods to the n/a motor to stay in it i wasnt aware i had to change rockers do I?and do push rods stay in place while i do swap like i know they are free after i take head off but which ones do i use any help is great thanks

98 REGAL gs

**BlackGT97** · 03-16-2012

doing a quck reference at autozone, the pushrods seem to be the same and I assume the rockers are the same. I hear that over time that the rods and rockers will wear into a groove, so it's best to keep the pushrods and rockers as the same pair. So it doesn't matter S/C or N/A, just keep them in the right pairs.

**98regal** · 03-16-2012

so if i have carbon build up in the new engine i bought should i use the ones from the s/c engine via the others maybe cloged due to that build up?

**BlackGT97** · 03-16-2012

What exactly went wrong with the old engine?

**98regal** · 03-16-2012

so the lady who owned it said it knocked then quit when i took fly bolts out it only went 3/4 revolution around but i got them out and i was told that the heads may be bad by a friend but it was a rod knock not a over heat would u think heads are still usable i have all new gaskets and all

**98regal** · 03-16-2012

17 - Double check everything once that is done. This step is one of the most vital of the entire swap. Once you are confident you did everything correctly, go ahead and position your old/new rocker arm pedestals onto the heads, your old/new pushrods into the motor and your old/new rocker arms onto the heads. You should be using new rocker arm bolts, as the old ones cannot be used.

Torque to: 11 lb ft + 90° going from the inside towards the outside, every other bolt. In other words, just don't torque two bolts that are next to each other one after another.

**Taz Magister** · 03-16-2012

I swapped the arms and rods from my l36 into l67 heads when I did mine just keep them together

**98regal** · 03-16-2012

ok im confused keep the ones from my sc motor with the heads would u think the sc heads would be bad if the sc motor threw a rod?

**Taz Magister** · 03-16-2012

Why would they be? Have the checked if your unsure at a machine shop

**BlackGT97** · 03-16-2012

I honestly don't know forsure. But I assume the heads are good from the S/C motor.

**98regal** · 03-16-2012

i didnt think so but a freind that stoped by said they could be bad my argument for that was sc motor threw a rod not overheated]

**matt5112** · 03-17-2012

Look at them.

**98regal** · 03-17-2012

well im told if they are warped even a little bit thy could be bad but agin the sc motor did not over heat it was rod knock im just gonna clean them as bestt i can and hope the heads and lim and uim all; seal i only need threaD SEALER ON THE OUTER HEAD BOLTS ARE THEY THE ONLY BOLTS THAT PASS THRU THE WATER JACKET

**matt5112** · 03-17-2012

You need new head bolts.

Piston might have chipped or let go completely.

You should inspect the head before making the assumption that its fine even though it was never overheated.

Seems most L67 heads are cracked between the valve seats.

Not that those cracks matter.

But damage from a piston eating the head is.

**BlackGT97** · 03-17-2012

take them to a machine shop and get them checked for cracks and flatness. There is a certian tolerance that they can be warped. out of that tolerance and they have to mill them down.

**98regal** · 03-18-2012

so i rented the tool from autozone and cant get any of the bolts to go in harmonic i have almost completed my 3800 to swap harmonic is the last thing before motor installation it seems the kit they give me has bolts that are to large from what i understand they are pre threaded harmonic but the holes inside are small and the kit doesnt have bolts small enuff are there other removal kits?

**dsmuts** · 03-18-2012

I think you need special bolts to do it. I used a big 3 jaw pulley puller to get the one off my motor.

**98regal** · 03-18-2012

like big to go on the outside or like the 3 holes it has

**matt5112** · 03-18-2012

http://www.grandprixforums.net/harmo...ler-29877.html

http://www.grandprixforums.net/how-d...off-11298.html

Couldn't keep this in the other thread?

**98regal** · 03-18-2012

hey i got that thanks ima go get the extra bolts thanks alot

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