Recent posts

#1

Generators / Re: 4.0 CCK rebuild everything...

Last post by RockwoodMike - Yesterday at 11:01 PM

Pic 1..Got the engine back from the machine shop..Just needed a hone and a touch up valve job..Hot tanked to clean it well..

Pic 2..This is the rubber mounts to replace the original mounts that can't be found new anywhere..They fit a Mercedes diesel application..Just an inch taller..But fit the application good..

Pic 3..After some rework, the shelf that mounts the generator will now be able to slide out about 12 inches to make servicing it easier..

#2

Generators / Re: 4.0 CCK rebuild everything...

Last post by RockwoodMike - Yesterday at 10:50 PM

Here is the bell housing piece for the generator..This is the piece that bolts direct to the engine

Before and after a good sand blasting cleaning..

#3

Chevy - GMC Chassis / Re: Holley 670?

Last post by kenwautoone - Yesterday at 03:00 PM

When I bought my 71 Winnebago 413,it had an Avenger 670 on it.It required pretty consistent adjustments.I replaced it with new Carter AFB 625.Just one set of adjustments,7 years ago.It got 2 mpg more.Ive had race cars,hot rods, muscle cars in 50 years of experience....Holleys are made for wot, Carter s are better for street use JMO

#4

Chevy - GMC Chassis / Re: Holley 670?

Last post by Eyez Open - Yesterday at 09:54 AM

As stated above, it may very well be more cost effective and less complicated to simply rebuild the Quadra jet. A linkage setup can get tricky and expensive, a carb rebuild is about $100 for a DIY job.

Then there is always the chance someone has tinkard with the Holley (jetting) rebuilding the Quadra jet might well be the answer..Lol such is life.

#5

Chevy - GMC Chassis / Re: Holley 670?

Last post by RockwoodMike - May 20, 2024, 09:02 PM

Just be careful of the linkage system..It is very important that the linkage from the carb down to the transmission is correct..If it is not adjusted right, it will burn up your transmission because the line pressures will be off..

As I am finding out, the Q jet is a decent carb..It is just a matter of learning it's systems and tear down procedures..

Plenty of Ytube videos to go over..  Quadrajetpower.com is excellent..

Cliff Ruggles book on the Q jet is great too..

#6

Chevy - GMC Chassis / Re: Holley 670?

Last post by Eyez Open - May 20, 2024, 08:00 PM

It will be just fine. Big Cfm carbs are made for higher rpm ranges. Your RV engine would have great difficulty ever reaching 40000 rpm under a load.

#7

Chevy - GMC Chassis / Holley 670?

Last post by probird462 - May 19, 2024, 12:29 AM

Hello.
I have a 1986 class a motorhome with a 454.
I was given a Holley 670 avenger and was wondering if anyone has any experience with one?
Right now it has a jumbled together Rochester qjet the previous owner put on just to get running.
Thanks in advance.
Barry.

#8

Generators / Re: 4.0 CCK rebuild everything...

Last post by RockwoodMike - May 16, 2024, 11:17 PM

Got the engine to the machine shop..Going see if it needs to be bored or just honed..Also a quick valve job

Pic 1..Removed all the brushes from the casting..Drew a good diagram where it all goes together..No crossed wires that way

Pic 2..Empty case to be cleaned and painted

#9

Generators / Re: 4.0 CCK rebuild everything...

Last post by RockwoodMike - May 16, 2024, 11:13 PM

Cam is out..One rod cap is removed..This has no bearing shells to the rod..Crank looks Great!!

#10

Generators / Re: 4.0 CCK rebuild everything...

Last post by RockwoodMike - May 16, 2024, 11:11 PM

Pic 1..Small valve spring compressor..A little too small..It struggled to do the job..

Pic 2..One set of valve..spring..keepers..cam follower..

Pic 3..Compressor in action..

Pic 4..With all the valves out..ready to remove cam..Take off thrust washer from the crank first..