New pushrod tube IMPI 88,s

Members can advertise their services here...
User avatar
IMPI
Donor
Donor
Posts: 1896
Joined: Wed Sep 14, 2005 9:01 pm
What model do you have?: sp2
Location: Orkney Northwest province
Has thanked: 1 time
Been thanked: 78 times
Flag: South Africa

New pushrod tube IMPI 88,s

Post by IMPI » Thu Sep 06, 2012 7:02 pm

Hi I have been struggling to find an acceptable aftermarket pushrod tube for a long time now and after some tinkering and a whole lot of research and slog im a proud to announce my version of the pushrod tube
some features:
One piece design will not leak in the middle
can be installed with the engine assembled
large 20mm inside diameter at the head (std is 18.5mm) this allows for high lift cams and ratio rockers)
spring loaded design allows for expansion and contraction as engine heats and cools
case side can be made longer (special order) to counter oil flow to the heads under severe cornering)
tubes may be ordered longer for use in stroker engines with barrel spacers.
I am currently setting up the production line and will be able to deliver by the end of the month
A rough estimate on cost would be around R75 per tube without seals and R8 per seal based on me having a first run of a hundred tubes
I am currently registering the design and is using these photos as the first unveiling on the net.
Photo of the completed tube
Image
Photo showing the component parts
Image
Photo of the case end showing the different styles available
Image
Photo showing the different types on one engine
Image
Photo of installed tube showing larger size
Image
I can be contacted by PM or E mail (a w botha at telkom sa dot net)
Regards
Armand


Image
Who cares how it's done in California? :twisted:
(018) 473-0186

User avatar
beetlefanatic
Donor
Donor
Posts: 3014
Joined: Wed Jan 30, 2008 9:59 am
What model do you have?: Late Bay, Syncro x 2
Location: Pretoria
Has thanked: 8 times
Been thanked: 11 times
Flag: Germany

Re: New pushrod tube IMPI 88,s

Post by beetlefanatic » Thu Sep 06, 2012 7:42 pm

Well done Armand! I'm very impressed with this design. I'm sure you have a winner.
The only substitute for cubic inches are more cubic inches.

User avatar
OD_1
Oil Seal
Posts: 477
Joined: Mon Mar 29, 2010 10:26 am
What model do you have?: 1976 1600S
Location: Cape Town
Been thanked: 1 time

Re: New pushrod tube IMPI 88,s

Post by OD_1 » Thu Sep 06, 2012 7:57 pm

Sweetness... some South African Aircooled Technology :hangloose:

Are these push rod tubes aluminium or stainless steel. What are the differences between the 3 types in the pic.

:mrgreen:

User avatar
IMPI
Donor
Donor
Posts: 1896
Joined: Wed Sep 14, 2005 9:01 pm
What model do you have?: sp2
Location: Orkney Northwest province
Has thanked: 1 time
Been thanked: 78 times
Flag: South Africa

Re: New pushrod tube IMPI 88,s

Post by IMPI » Thu Sep 06, 2012 8:03 pm

My tubes are made from aluminium. Stainless would also work but not too good in my opinion since both head and case is alloy introducing a different metal could cause galvanic corrosion and you would rather the tube corrode than the head or case.
The other tubes are the different type available on the market in SA They are all two piece introducing yet another possible leaking point and range from merely terrible to very bad get you home type
Armand
Image
Who cares how it's done in California? :twisted:
(018) 473-0186

User avatar
Chucker02
Drip
Posts: 30
Joined: Fri May 21, 2010 4:56 pm
What model do you have?: Beetle
Facebook: chattingh74@gmail.com

Re: New pushrod tube IMPI 88,s

Post by Chucker02 » Thu Sep 06, 2012 8:33 pm

that is brilliant! good work!

User avatar
MarshallGTi
Camshaft
Posts: 883
Joined: Wed Feb 01, 2012 4:16 pm
What model do you have?: GTi 16v
Location: Alberton, JHB
Has thanked: 7 times
Been thanked: 11 times

Re: New pushrod tube IMPI 88,s

Post by MarshallGTi » Fri Sep 07, 2012 8:15 am

thats a bloody good price...
Ryan Marshall

An ingenius solution to a problem that should have never existed in the 1st place

My Bug http://www.aircooledvwsa.co.za/viewtopi ... 37&t=25752" onclick="window.open(this.href);return false;
3250

User avatar
riaanj
Exhaust Pipe
Posts: 1665
Joined: Wed Oct 06, 2010 8:17 pm
What model do you have?: None ATM, oneday...
Location: Germiston
Has thanked: 6 times
Been thanked: 41 times
Flag: Ireland

Re: New pushrod tube IMPI 88,s

Post by riaanj » Fri Sep 07, 2012 1:58 pm

sweet man, once I tackle my motor's rebuild I'll be contacting you for a set! :hangloose:
Just keep on BUGGIN'
Protect the endangered, say NO to exporting our AirCooled spares & cars..

T6 Ranger 2.2TDCi D/Cab
307E Anglia panel-van
Honda CBR600RR
Honda CBR600F4
Honda CBR1100XX SuperBlackbird

Blitzkrieg
ACVWSA Junkie
Posts: 10672
Joined: Wed Mar 07, 2007 10:41 am
What model do you have?: none
Location: Johannesburg
Has thanked: 83 times
Been thanked: 35 times
Flag: Bermuda

Re: New pushrod tube IMPI 88,s

Post by Blitzkrieg » Fri Sep 07, 2012 3:02 pm

Legendary! Well done on this latest innovation, wish that I had an engine to put them into :lol:
If it's too low, you're too old :twisted:

User avatar
retrovan
Donor
Donor
Posts: 7011
Joined: Mon Feb 07, 2011 8:51 pm
What model do you have?: 52T1,68FB,72Bay,75FL
Location: Eich! no, in Jefferys Bay
Has thanked: 109 times
Been thanked: 341 times
Flag: Netherlands
Contact:

Re: New pushrod tube IMPI 88,s

Post by retrovan » Sat Sep 08, 2012 3:53 pm

Hi Armand,
I think you have brilliant idea there, love the concept, and easy to fit, without taking the head off.
Love it.

Herman
1952 Split Beetle 1835cc twin 34ICT's (Azure Blue)
1968 Fastback (2Lt.type4)twin 34ICT's( Red)
1972 Low Light Bay Panel Van (2Lt type 4)twin 34ICT's(White)
1975 Fleetline Panel Van 1914cc twin 34ICT's(Aqua Blue/White)

User avatar
OD_1
Oil Seal
Posts: 477
Joined: Mon Mar 29, 2010 10:26 am
What model do you have?: 1976 1600S
Location: Cape Town
Been thanked: 1 time

Re: New pushrod tube IMPI 88,s

Post by OD_1 » Fri Sep 28, 2012 10:57 pm

Hey Guys,

I sent Retrovan a PM two days ago about ordering these pushrods and he still never responded. Does anyone have his contact number.

Please PM me if u do.

:mrgreen:

User avatar
retrovan
Donor
Donor
Posts: 7011
Joined: Mon Feb 07, 2011 8:51 pm
What model do you have?: 52T1,68FB,72Bay,75FL
Location: Eich! no, in Jefferys Bay
Has thanked: 109 times
Been thanked: 341 times
Flag: Netherlands
Contact:

Re: New pushrod tube IMPI 88,s

Post by retrovan » Sat Sep 29, 2012 12:01 am

OD_1 wrote:Hey Guys,

I sent Retrovan a PM two days ago about ordering these pushrods and he still never responded. Does anyone have his contact number.

Please PM me if u do.

:mrgreen:
Me thinks, you wana PM the IMPI, he be the clever one who had done it. .... :lol:

Retrovan not slim genoeg to do that.... :shock:

NO, sorry, you did not send me an PM, you must send one to IMPI, aka Armand. :wink:

Herman
1952 Split Beetle 1835cc twin 34ICT's (Azure Blue)
1968 Fastback (2Lt.type4)twin 34ICT's( Red)
1972 Low Light Bay Panel Van (2Lt type 4)twin 34ICT's(White)
1975 Fleetline Panel Van 1914cc twin 34ICT's(Aqua Blue/White)

User avatar
IMPI
Donor
Donor
Posts: 1896
Joined: Wed Sep 14, 2005 9:01 pm
What model do you have?: sp2
Location: Orkney Northwest province
Has thanked: 1 time
Been thanked: 78 times
Flag: South Africa

Re: New pushrod tube IMPI 88,s

Post by IMPI » Sat Sep 29, 2012 8:10 am

Hi everybody due to the mines strike have been busy at work will respond this weekend though am still making them whenever there is time
Armand
Image
Who cares how it's done in California? :twisted:
(018) 473-0186

User avatar
Ron&Gill
Full-time Bug Nutter
Posts: 4054
Joined: Fri Aug 29, 2008 4:16 am
What model do you have?: Type 1, 21b, 34, 316
Location: St Lucia KZN/Lusby MD
Has thanked: 1 time
Been thanked: 21 times
Flag: Netherlands

Re: New pushrod tube IMPI 88,s

Post by Ron&Gill » Sat Sep 29, 2012 6:58 pm

I like.

I have used those aluminium ones in the pic (not IMPI's) and they damaged the push rods (high ratio rockers). I replaced them with the plastic ones with the spring on the outside, and they are fine up to now. They are just a pig to keep clean.

I definitely like the IMPI design.
1964 T34 - The Razor: viewtopic.php?f=23&t=10290
1956 T2 1b - Gill's bus: viewtopic.php?f=23&t=10948
1967 T316 - viewtopic.php?f=23&t=10931 & viewtopic.php?f=23&t=15977
2000 beach buggy - viewtopic.php?f=23&t=10915

User avatar
calooker
Donor
Donor
Posts: 4876
Joined: Wed Sep 14, 2005 9:24 am
What model do you have?: 77 SP
Location: Johannesburg
Has thanked: 4 times
Been thanked: 82 times
Flag: Portugal
Contact:

Re: New pushrod tube IMPI 88,s

Post by calooker » Mon Jan 21, 2013 2:03 pm

Hi Armand got my hands on a few of these, I find that the spring does not have much tension, I fitted 4 and the push rods seem rather "loose" and had to do some work on the head to make them fit, let me know what is your take on my finding, yours are very simmilar to the US made J-Cee tubes.
Not run the motor yet but hoping for no leaks.
For what it's worth, ignorance has no limits ......

User avatar
IMPI
Donor
Donor
Posts: 1896
Joined: Wed Sep 14, 2005 9:01 pm
What model do you have?: sp2
Location: Orkney Northwest province
Has thanked: 1 time
Been thanked: 78 times
Flag: South Africa

Re: New pushrod tube IMPI 88,s

Post by IMPI » Mon Jan 21, 2013 2:41 pm

Hi there has been much discussion on internet forums and the comment of too much spring pressure is heard more often than too little pressure. I have removed a lot of the plastic and alu tubes in my time and most often the seal is completely destroyed due to over tension. Ultimately the seal is doing the work and not the spring. I use silicone based Elring seals and they seal well but over tension can make them push out like toothpaste.
If more tension is felt to be needed such as with stroker engines I can move the circlip groove or you can add another spacer behind the spring. but I really think it is unnecesarry. The alu tube will also expand more than cast iron when hot thus providing more tension when at operating temp
Armand
Image
Who cares how it's done in California? :twisted:
(018) 473-0186

Post Reply