[F-BIRD'88]

You need to accurately measure the rod small end diameter. And the actual pin diameter ... Probably needs to be honed for the required pin/pin hole clearance.
to run as a floater It should be a press fit now,, no?

No benefit to full floaters on your build. unless you plan on frequent tear-downs.

I'd go with press fit. Keep it simple.

[andyy]

What is the best for the first start for the engine:
- start and 2.000 rpm or
- start and minimum idle?

How should I begin to drive with the boat,
- 20 h only at idle or
- with varying rpm's?

First engine oil change, which oil?

When it will possible for maximum speed/rpm?


Andreas

[andyy]

Regarding piston to cylinder-wall clearance, if it shall be 0.005'', the piston is 4.030'', the bore must be 4.035'' or 4.040''?

Andreas

[andyy]

Any answers? Please help.

Andreas

[andyy]

Hi,

now my project will continue...

I have a problem with the ARP main stud kit 234-5601.
The thread for the windage tray is to short to fix it without contact
the crankshaft.

What is possible, longer ARP studs or new windage tray with deep formed
mounting holes?


Andreas

[hcompton]

you nee studs from arp to run the windage try.

Also did you get a new oil pump and pump shaft. I noticed it wasnt on the list.

If going roller cam be sure to use a rev kit. doesnt cost much but could be the difference between a tow home and motoring back to sure on your own. They say you can toss a push rod out and still run the motor for a short time with one installed. Very handy when you cant call AAA for a rollback. But have only used one once.

Engine should only be bored with the pistons in hand. Each cylinder should be matched to the piston. But alot of machine shops will just bore it if you ask.

That being said piston to wall clearence should be within factory specs for most blower applications. But i am not a FI expert. bore should be 4.030 pistons will be smaller until they heat up. Size for a piston is measured at the skirt. not the head or ring lands. so .030 pistons will actually be a little smaller when they heat up they will be at the corect size. So the clearance is added to allow the engine to still run once its hot.

[andyy]

Originally Posted by hcompton

you nee studs from arp to run the windage try.

if you google "arp 234-5601" you will see that the kit is for using with windage tray...

...that's my problem


Andreas

[hcompton]

Cant help on that one Sorry. I know you can buy a windage try that calls for the bolts you have cheaper than new bolts usally. Windage try is usally only 15-25 bucks. bolts can be alot more.

[Richiehd]

Get the Milodon diamond scraper and the proper bolt kit for it

[andyy]

New problems...

Can someone explain the difference between these oilpumps:
- Melling 10550 with 0.625 pickup diameter (my new one)
- GM 12555281 with 0.750 pickup diameter (my old one)

What should I install and why?


Andreas