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CB shorty IDF manifolds on 049 RM heads tight access issues
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Yabbadubbadoo
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PostPosted: Mon May 22, 2023 1:35 am    Post subject: CB shorty IDF manifolds on 049 RM heads tight access issues Reply with quote

Has anyone here done CB shorty IDF manifolds on Revmaster 049 heads? My DRD heads based on the 049 RM castings with 12mm plugs has virtually no space for plug leads and accessing the studs to bolt the manifolds down. My engine builder thinks I'll hate it. Reckons it's near impossible to fit the leads. Will surely also require full removal of the carbs and inlet manifolds to get at the spark plugs. I haven't been able to check it out yet but it has me concerned.
Can anyone here shed some light on the issue?

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Erik G
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PostPosted: Mon May 22, 2023 6:21 am    Post subject: Re: CB shorty IDF manifolds on 049 RM heads tight access issues Reply with quote

yes, everyone with IDF's / DRLA's on a type 3 has this issue
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VWporscheGT3
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PostPosted: Mon May 22, 2023 9:58 am    Post subject: Re: CB shorty IDF manifolds on 049 RM heads tight access issues Reply with quote

Yabbadubbadoo wrote:
Has anyone here done CB shorty IDF manifolds on Revmaster 049 heads? My DRD heads based on the 049 RM castings with 12mm plugs has virtually no space for plug leads and accessing the studs to bolt the manifolds down. My engine builder thinks I'll hate it. Reckons it's near impossible to fit the leads. Will surely also require full removal of the carbs and inlet manifolds to get at the spark plugs. I haven't been able to check it out yet but it has me concerned.
Can anyone here shed some light on the issue?

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I used a wobly and shortish spark plug socket, to break them loose, then i jam a piece of fuel line on the end and twist it out , the reverse for install. it can be done with the carbs in place... not fun, requires a certain level of patience but it can be done
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Erik G
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PostPosted: Mon May 22, 2023 10:12 am    Post subject: Re: CB shorty IDF manifolds on 049 RM heads tight access issues Reply with quote

VWporscheGT3 wrote:
Yabbadubbadoo wrote:
Has anyone here done CB shorty IDF manifolds on Revmaster 049 heads? My DRD heads based on the 049 RM castings with 12mm plugs has virtually no space for plug leads and accessing the studs to bolt the manifolds down. My engine builder thinks I'll hate it. Reckons it's near impossible to fit the leads. Will surely also require full removal of the carbs and inlet manifolds to get at the spark plugs. I haven't been able to check it out yet but it has me concerned.
Can anyone here shed some light on the issue?

Image may have been reduced in size. Click image to view fullscreen.


I used a wobly and shortish spark plug socket, to break them loose, then i jam a piece of fuel line on the end and twist it out , the reverse for install. it can be done with the carbs in place... not fun, requires a certain level of patience but it can be done


also gotta cut the intake studs short as possible and use the tiny nuts with the flange, they really help https://www.thesamba.com/vw/classifieds/detail.php?id=929112

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Yabbadubbadoo
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PostPosted: Mon May 22, 2023 12:27 pm    Post subject: Re: CB shorty IDF manifolds on 049 RM heads tight access issues Reply with quote

Erik G wrote:
yes, everyone with IDF's / DRLA's on a type 3 has this issue

Yeah I'm starting to figure that out. I guess it's the price you pay for a rear trunk.
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Yabbadubbadoo
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PostPosted: Mon May 22, 2023 12:30 pm    Post subject: Re: CB shorty IDF manifolds on 049 RM heads tight access issues Reply with quote

Erik G wrote:
VWporscheGT3 wrote:
Yabbadubbadoo wrote:
Has anyone here done CB shorty IDF manifolds on Revmaster 049 heads? My DRD heads based on the 049 RM castings with 12mm plugs has virtually no space for plug leads and accessing the studs to bolt the manifolds down. My engine builder thinks I'll hate it. Reckons it's near impossible to fit the leads. Will surely also require full removal of the carbs and inlet manifolds to get at the spark plugs. I haven't been able to check it out yet but it has me concerned.
Can anyone here shed some light on the issue?

Image may have been reduced in size. Click image to view fullscreen.


I used a wobly and shortish spark plug socket, to break them loose, then i jam a piece of fuel line on the end and twist it out , the reverse for install. it can be done with the carbs in place... not fun, requires a certain level of patience but it can be done


also gotta cut the intake studs short as possible and use the tiny nuts with the flange, they really help https://www.thesamba.com/vw/classifieds/detail.php?id=929112

Image may have been reduced in size. Click image to view fullscreen.


Thanks for the tips. Exactly what I need. Did you have to do any mods to the cooling tins behind the manifold?
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PostPosted: Mon May 22, 2023 1:00 pm    Post subject: Re: CB shorty IDF manifolds on 049 RM heads tight access issues Reply with quote

It's been a while but yes I remember some dimpling and trimming of the dual port tin piece that looks like a mustache?
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PostPosted: Mon May 22, 2023 1:23 pm    Post subject: Re: CB shorty IDF manifolds on 049 RM heads tight access issues Reply with quote

Erik G wrote:
It's been a while but yes I remember some dimpling and trimming of the dual port tin piece that looks like a mustache?


I concur. tin snip time Laughing just sneak up on it, it didnt take much to finally clear
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Yabbadubbadoo
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PostPosted: Mon May 22, 2023 2:56 pm    Post subject: Re: CB shorty IDF manifolds on 049 RM heads tight access issues Reply with quote

VWporscheGT3 wrote:
Erik G wrote:
It's been a while but yes I remember some dimpling and trimming of the dual port tin piece that looks like a mustache?


I concur. tin snip time Laughing just sneak up on it, it didnt take much to finally clear



Erik G wrote:
It's been a while but yes I remember some dimpling and trimming of the dual port tin piece that looks like a mustache?


Thanks for the info guys. Much appreciated.
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W1K1
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PostPosted: Tue May 23, 2023 1:46 pm    Post subject: Re: CB shorty IDF manifolds on 049 RM heads tight access issues Reply with quote

aircraft nuts with the wobble and a 10" extension, and pull the carbs/manifold when you want to change the plugs
keep a supply of manifold gaskets, and it's a fun job getting the plug wires on/off Wink

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Yabbadubbadoo
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PostPosted: Wed May 24, 2023 3:34 am    Post subject: Re: CB shorty IDF manifolds on 049 RM heads tight access issues Reply with quote

W1K1 wrote:
aircraft nuts with the wobble and a 10" extension, and pull the carbs/manifold when you want to change the plugs
keep a supply of manifold gaskets, and it's a fun job getting the plug wires on/off Wink

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Thanks for the tips. Fun job eh! 😖
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Erik G
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PostPosted: Wed May 24, 2023 8:03 am    Post subject: Re: CB shorty IDF manifolds on 049 RM heads tight access issues Reply with quote

right and make sure to always use the cardboard type gaskets here. don't use the metal ones
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