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Old 02-25-2006, 09:51 PM   #1
Lord Tentacle
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Default 530 head questions

I could not find any info on this via the search function....

on my 530 head from a 91 b230ft
it apears that there are places on the head for a head mounted fuel injection rail + injectors

I'm assuming these were for the K-jet system?
and when volvo switched to LH they moved the injectors to the intake manifold

If i wanted a head with the injectors and fuel rail already on it
what year/make should i be looking for?
or would it be a better idea to just get the fuel rail and have a machineist drill the holes for me?
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Old 02-25-2006, 10:05 PM   #2
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In the later models, the injectors were on the intake manifold, not the head.
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Old 02-25-2006, 11:56 PM   #3
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Quote:
Originally Posted by volvogeek
In the later models, the injectors were on the intake manifold, not the head.
agreed

but that's not what i was asking
let me post some pics tomorow to explain what i'm asking
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Old 02-27-2006, 03:14 PM   #4
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There was never a fuelrail on the heads, the K-Jetronic had separate copparfuellines from the distributör/AMM to each injector.
Those injectors had smaller diameter than the electrical ones on later models.
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Old 02-27-2006, 05:04 PM   #5
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Tiebird, go take a look at the watercooled 8V 4 cylinder volkswagen heads from the 80s. I think they will give you ideas. Hint; in those heads, you can go from CIS (K-jet) to pulsed (LH-like) injection by replacing the plastic seats on the holes on the head.
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Old 02-27-2006, 05:09 PM   #6
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yes you can machine the head to receive the efi injectors.
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Old 02-27-2006, 06:47 PM   #7
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you can even use LH-injectors directly into the K-jet injector holes, been there done that.
It's a very tight fit though. but the distances between the injectors are the same! You can use the original LH-fuelrail on top of the injectors but you have to make some brackets to mount it securely and to mount the FPR.
Why did we try this? we wanted to try the K-jet intake manifold (with the bigger plenum) in combination with the LH-system. It works just fine!
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Old 02-27-2006, 09:12 PM   #8
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this pic sorta exxplains my questions
if these are the non drilled out injector holes
which car would i find a 530 head in that had them already drilled out and setup for injectors and that would let me use a head mounted dizzy

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Old 04-24-2015, 02:06 PM   #9
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I also have a k-jet manifold ive been wanting to put in my 530.... They have drill bits for bosch style injectors on ebay, I wonder if you could just drill into the bosses? I would make simple fuel rail brackets from soft aluminum that attaches to two of the valve cover acorn nuts so i dont have too modify too mutch.
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Old 04-24-2015, 02:31 PM   #10
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L.T. I believe your thinking of the B230E ? It had a k-jet head mounted injectors on the b230 platform.

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Old 04-24-2015, 02:32 PM   #11
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9 year bump?
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Old 04-24-2015, 02:45 PM   #12
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Quote:
Originally Posted by Janspeed View Post
you can even use LH-injectors directly into the K-jet injector holes, been there done that.
It's a very tight fit though. but the distances between the injectors are the same! You can use the original LH-fuelrail on top of the injectors but you have to make some brackets to mount it securely and to mount the FPR.
Why did we try this? we wanted to try the K-jet intake manifold (with the bigger plenum) in combination with the LH-system. It works just fine!
pics?
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Old 04-24-2015, 02:46 PM   #13
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9 year bump?
First y'all complain if someone starts a thread about something that's been covered before, then y'all complain if someone bumps a pre-existing thread with questions
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Old 04-24-2015, 02:49 PM   #14
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Originally Posted by 93Volvo240 View Post
First y'all complain if someone starts a thread about something that's been covered before, then y'all complain if someone bumps a pre-existing thread with questions

First, I don't complain when someone does that. Second, the OP hasn't followed up in nine years. Either he's lost interest or located his info elsewhere.
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Old 04-24-2015, 02:52 PM   #15
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First y'all complain if someone starts a thread about something that's been covered before, then y'all complain if someone bumps a pre-existing thread with questions
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Old 04-24-2015, 04:09 PM   #16
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Quote:
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First, I don't complain when someone does that. Second, the OP hasn't followed up in nine years. Either he's lost interest or located his info elsewhere.
Maybe he's still in the process.
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Old 04-24-2015, 09:32 PM   #17
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I'm considering this method... No welding shops near to put bungs on the intake...no other options, And you have to admit a highly Polished aluminum k-jet manifold without f/rail would look freaky-sexy.

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Old 04-25-2015, 01:15 PM   #18
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Second post I've seen recently about tapping holes into a head. How do people do this accurately, as in, straight? People just using a hand-held drill and holding their breath??
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Old 04-25-2015, 04:43 PM   #19
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As long as the drill bit comes out close to the center of the Runner I think it will work fine... imo In a perfect world I would make a jig to hold the head at an angle so the k-jet injector bosses are level with the base of the Drill press stand, Drill a decent sized holes that are a bit under the OD of the injector O-ring in each boss, Final drills could be made with specialty bits made to bore out Bosch dia. injector ports.

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Old 04-25-2015, 07:55 PM   #20
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Quote:
Originally Posted by B230M47II View Post
I'm considering this method... No welding shops near to put bungs on the intake...no other options.
Mail it to Nathan or Yoshifab and don't worry about it.
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Old 04-26-2015, 12:16 AM   #21
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...

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Old 04-26-2015, 08:30 AM   #22
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Old 04-26-2015, 09:04 AM   #23
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Quote:
Originally Posted by theknave View Post
Second post I've seen recently about tapping holes into a head. How do people do this accurately, as in, straight? People just using a hand-held drill and holding their breath??
A couple of these posts got my attention too as I have been thinking of using a K-jet inlet manifold and, as has been said, having the injectors in the head K-jet style would eliminate the need to have bungs welded.
Other than people saying it has been done I have not found any posts from someone that has actually done it.
Are there any drawbacks to Bosch injectors in the head? -too much heat etc??
Anyone here done it?
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Old 04-26-2015, 04:10 PM   #24
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Heat issues? I don't think so. It would be identical to k-jet, and they seem to do fine ...
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Old 04-26-2015, 04:15 PM   #25
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Giving up and paying someone to do it, is out of my budget.
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