Push rod engines..

missfire · 17-01-17, 12:55 PM

Hello, being so youthful and sprightly (not) I have never maintained a push rod engine until now, I'm wondering about maintenance intervals for adjusting them and if the are way out can that dramatically effect performance?

It's an industrial toyota forklift truck engine in a scooby doo mystery machine, I know it's meant to be slow but jesus.. 0-60 in about a minute, if you're lucky!

It's an auto box and doesn't always change so quickly, I've taken the slack out of the kick down cable but don't want to push it too much with the trans. fluid pressures. I'm going to get the box hot flushed soon but from rest it's as if it's hauling a jumbo jet around. 3.5K revs and it takes off like a rocket!

I'm presuming it's just not using first gear but don't want the rods to pop out through the side of the block one day!

Thanks for any advice.

p.s. import and the only workshop manuals made were written in Russian, so.. although I'd love to learn Russian, I don't have time at the moment.

simons2 · 17-01-17, 01:45 PM

My old mini and vw air cooled engines were push rod. If there's to big a gap then the valves are not opening correctly thus limiting fuel and exhaust thus lower power. Get a set of feeler gauges and measure the gap on the closed valves and compare to the manufactures info. Just a thought.

Bunyoch · 17-01-17, 02:04 PM

BMC -- A series and B series were adjusted every 6000 miles at each service - - quick and easy to keep correct - - as above gap is important

Duffy3074 · 17-01-17, 04:12 PM

If the they were well out you'd hear a distinctive tapping noise

sinbin5t · 17-01-17, 04:36 PM

Quote:

Originally Posted by missfire

although I'd love to learn Russian, I don't have time at the moment.

Whatski ? no timeski ? well misskifire you will have to makeski some timeski !

There you go it's easy

missfire · 17-01-17, 06:54 PM

Quote:

Originally Posted by simons2

. Get a set of feeler gauges and measure the gap on the closed valves and compare to the manufactures info. .

Aye, getting that info is the problem,

will compare them to each other!

Quote:

Originally Posted by Bunyoch

every 6000 miles at each service

Quote:

Originally Posted by Duffy3074

If the they were well out you'd hear a distinctive tapping noise

difficult to hear as the one piece exhaust manifold can crack into five pieces and it only has about half the studs in it it's suppose to have!

Will try to filter that noise out.

Mr 5T......

17-01-17, 02:04 PM	#3
Bunyoch Grown up member Join Date: Dec 2008 Location: central scotland Posts: 60	BMC -- A series and B series were adjusted every 6000 miles at each service - - quick and easy to keep correct - - as above gap is important Last edited by Bunyoch; 17-01-17 at 02:07 PM.

17-01-17, 01:45 PM	#2
simons2 Grown up member Classic Audi Club Member Join Date: Jun 2012 Location: ireland Posts: 291	My old mini and vw air cooled engines were push rod. If there's to big a gap then the valves are not opening correctly thus limiting fuel and exhaust thus lower power. Get a set of feeler gauges and measure the gap on the closed valves and compare to the manufactures info. Just a thought.

17-01-17, 04:12 PM	#4
Duffy3074 4 ring whore! Classic Audi Club Member Join Date: Aug 2015 Location: Dalgety Bay, Fife Posts: 2,078	If the they were well out you'd hear a distinctive tapping noise