Advice on Building an Engine, overseas
 

Hi guys...my name is zole and im writing you from another continent...I have a chevy 502 big block with a holly 750 blowthrou carb with a m-1 procharger and a water coold inzercooler.It is a stock engine and it is going in a cris craft boat.Since nobody in europa does this kind of engines i decided to ask for help from you guys...Before I start sending spec is there sombody who is willing to help me make this engine run.I come from croatia a small country across italy
.thank you in advance and excuse my gramar

Welcome to OSO, bad grammar is forgivable. Some members (myself included) display poor grammar even though English is their first language.
Get your post count up to ten, then you may post pictures, they can be in this thread and totally meaningless. But if you can make them entertaining it is appreciated.
Once you start asking questions and let us know what your goals are, you will receive lots of help.

Omg....thank you so much...It realy means a lot to me to know that sombody is willing to help a stranger across the world.But just so you know you and others who will help will be making history because this will be the first blowthrou engine ewer bild in this part of the world...nobody has ever made one..this will be the firs.Thank you again for your time

Wow - I would love to pack up and help and even make a permanent vacation out of it. Looks like a beautiful place to be and the shapes of some of those islands are unreal. What’s it like where your at? Btw Welcome to OSO

Hey...sorry for not answering wright away im a father of 2 young boys so they are giving me a hard time...My country is beutiful we are a huge turist destination lot of celebretis come here.Wen i hit enough posts ill send pictures.Thank you for willing to help me...realy

just do a count down....
one post with one number...

8
7
6
5
etc...

Welcome a Board.

Feel free to keep our celebrities. :)

What hull do you have?

Im wery sorry i dont know what a hull is...i feel stupid but try to understand me.Good one obout selebretis:lolhit:

what is the boat = hull.............manufacturer Cris craft and model ?

Cris craft stinger 22ft....that is my boat

I doubt Dyno facilities are common there. Try to get a carburetor that’s as set up as possible. Maybe pay to have one that’s been dyno tested and set up on a very similar engine to yours shipped over.

Yea...your right about dyno...there are no engines like my...the best we have are mercrusers 5.7...6.2....and 7.4...that is in liters we are in metrick sistem:D.So i dont have spare parts everything i need i have to order from USA and wait for 20 days to come..wery expencive...I have found a carb it is a 750 i think it has 2 acc pumps and 2 floats holly and im making a blowthrou aut of him.

Id recommend buying one setup to be a blow through carb from CSU or someone like that. It would be cheap insurance. Your science experiment carburetor could blow up your whole engine. Try to copy a proven engine combination as much as possible

I run a blow through carb set up and if you don't have access to a dyno at least get a wide band o2 set up it will make adjusting the carb a little less difficult

Thanks guys for the tips...A videband a/f guage is coming with the parts for the carb and a set of holly jets 64-99...

Watched Engine Masters on TV (cable - motortrend channel) the other night, the episode they tested different blow thru carb hats and different positions of the hats with 8 02 sensors (1 per cylinder) and all i can say is yikes ! Oh, and try go find it on youtube or etc.

Believe episode is ‘ Carb Hats for Blowers ‘

Thanks for the info...ill take a look.But honestly i think with the help of you guys i could make this work.I'm not looking for big boost since my engine is all stock max that i would do is mayby 4psi nothing over that.

https://cimg4.ibsrv.net/gimg/www.off...a48f172b9a.jpg
https://cimg7.ibsrv.net/gimg/www.off...3434fb671c.jpg
https://cimg0.ibsrv.net/gimg/www.off...169d49356c.jpg
https://cimg1.ibsrv.net/gimg/www.off...e4a6027326.jpg
This is the carb i need help with...got the holly blowthrou set few days ago...im starting modification soon.
https://cimg3.ibsrv.net/gimg/www.off...61d2436deb.jpg
https://cimg4.ibsrv.net/gimg/www.off...f3df3daf95.jpg
I realy hope we can make this work

Can sombody tell me the best way to set valve clerance on this engine.

hi...can i ask you for some info since you sead you run a blowthrou carb

You mean hydraulic lifter preload ? Just making sure as some call it the same and some don’t.

Btw: your distributor in the photos is not marine coast guard approved. It’s an automobile distributor.

O thank you god....i thout you had enough of me:rolleyes:

so what do you think...are we going to make it work or not...you are my last chance

Yes...preload

I do preload: back off all rockers.
Starting with cyl #1 rotate engine clockwise until intake valve just about closed adjust exhaust. As you are slowly turning exh pushrod with fingers as you tighten exh rocker arm, right when pushrod resists turning, you are at 0 preload. Tighten exh rocker arm nut 1/2 turn.

For #1 intake valve, do same procedure but when it’s exhaust valve just starts to open is when to adjust the #1 intake valve’s rocker srm.

I’m sure there are many videos and better written instructions, but that’s how you do it . 1/2 turn works on all cam/lifter manufacturers stuff for american v8’s.

ok so i did it wright...what do you think is this engine going to work properly...im doing the modifications on the carb...your advice regarding my procharger...my crank pully is 7.8 and my charger pully is 3.3 inc..what do you think

Sorry I never saw your post if you still have any questions go ahead and ask .