By continuing to use this site, you agree to our use of cookies. Find out more

Irvine 20 Diesel Spares / Parts / Damaged Engine wanted

Cylinder head & compression screw required

All Topics | Latest Posts

Search for:  in Thread Title in  
John Botomley29/10/2020 09:25:28
9 forum posts

Trying to sort out a butchered Irvine 20 diesel recently bought off a well known auction site.

The area around the compression screw locking mechanism (essentially a grub screw inserted into a tapped hole in the side of the cylinder head) has been butchered.

Ideally I'm looking for a new spare cylinder head & compression screw, but willing to consider a used part in good condition or even a complete non-runner engine.

What's out there??

J D 829/10/2020 11:23:16
avatar
1671 forum posts
82 photos

Hi John, Irvine diesels are a bit of a rarity. [ I have a 40 ] Finding spares may be difficult as they were not in production long.

Never thought much of the grub screw idea and fitted mine with a locking lever on the compression screw similar to other engine types. [ made from a steel strip drilled and tapped at one end. ] With the comp screw and head if damaged ED [ engine doctor ] may be able to help.

Cheers, John.

John Botomley29/10/2020 15:27:29
9 forum posts

Hi John,

I have a 40 too which was NIB when I bought via ebay from the US.

It runs Model Technics 1000, turning a 21" x 7" in a Wot Trainer - superb.

Both the 20 & 40 have this grub screw locking which I thought was standard

Thanks for the Engine Doctor tip too

John B

ken anderson.29/10/2020 16:10:34
avatar
8794 forum posts
814 photos

Hello JB, a 21"* 7" on a 40 diesel has to be a world record!...in a wot trainer...

ken anderson...ne...1...possible typo mistake dept.

John Botomley29/10/2020 16:28:59
9 forum posts

Yes - fat thumbs on a smart phone!!

J D 829/10/2020 19:06:28
avatar
1671 forum posts
82 photos

The grub screw was standard and a rubbish idea, damaging the thread on the comp screw hence the mod.

Model Technics recommend D2000 or 3000 thousand for engines larger than 1.5cc, 3000 for ball race engines. John.

John Botomley30/10/2020 08:26:46
9 forum posts

Thank you everyone!

Doug Campbell12/11/2020 08:10:14
115 forum posts
2 photos
Posted by J D 8 on 29/10/2020 19:06:28:

The grub screw was standard and a rubbish idea, damaging the thread on the comp screw hence the mod.

Model Technics recommend D2000 or 3000 thousand for engines larger than 1.5cc, 3000 for ball race engines. John.

The grub screw forced a ptfe pad onto the compscrew which held the company screw in place by friction, the amount of which was easily adjusted. It worked very well, for your thread to be damaged implies the ptfe pad is missing.

J D 812/11/2020 08:53:08
avatar
1671 forum posts
82 photos

Thanks for the info Doug. I have had the engine from new so I guess the pad was never in there in the first place as damage was noticed soon after first runs. Cheers. John.

All Topics | Latest Posts

Please login to post a reply.

Latest Forum Posts
Support Our Partners
CML
electricwingman 2017
Subscribe now
Sussex Model Centre
Slec
Advertise With Us
Sarik
Latest "For Sale" Ads
NEW POLL - has the pandemic altered your event safety perceptions?
Q: Has the covid pandemic deterred you from attending shows and events in 2021?

 No, I'll be attending just as many as I usually do
 No, but I'll choose my event with greater care
 Yes, I'll attend fewer events going forward
 Yes, I wont attend any where previously I have

Latest Reviews
Digital Back Issues

RCM&E Digital Back Issues

Contact us

Contact us

Magazine Locator

Want the latest issue of RCM&E? Use our magazine locator link to find your nearest stockist!

Find RCM&E!