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Old 14th July 2010, 08:10 AM
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4BE1 Pics

Anyone got pics of an Isuzu 4BE1?

I'm interested in the inlet manifold mainly, wondering if they made any radical changes there to get the power levels up in a non turbo engine. One of the guys here (might be Andrew E) fitted a different inlet manifold with a bigger intake flange to his 4BD1 a few years back and dropped the EGT's, I suspect this might have been a 4BE1 part.
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Old 14th July 2010, 08:40 AM
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I can take a few pics later and post them, providing I get my computer back from the repairers
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Old 14th July 2010, 09:04 AM
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Here's a couple of shots, not sure if they are any good though
Attached Images
File Type: jpg various 064.jpg (48.0 KB, 173 views)
File Type: jpg various 066.jpg (52.9 KB, 176 views)
File Type: jpg various 067.jpg (49.7 KB, 145 views)
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Old 14th July 2010, 09:20 AM
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Thanks Jerry, they're exactly what I wanted to see.

Basically the 4BE1 is at least 10% better at processing air than a non turbo 4BD1. I think this change is mostly due to the intake manifold design. I wasn't sure if the 4BE1 used that particular manifold, but your pics confirm it does.

Might be a cheap and easy 10% gain for the rest of us. I think there should be some mpg's hidden in there too.
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Old 14th July 2010, 10:07 AM
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Glad they are of some help, maybe that's why the 4BE1 goes so well then With this colder weather we are getting mine seems to be flying along and I actually hit 120 the other day.

Of course it could just be a new air filter and an oil change that's done it. I still keep pondering "Turbo" or "Two Stroke" as I'm still waiting on the rotec design to finalise and see if it's compatible for the engine bay
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Old 14th July 2010, 03:12 PM
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Quote:
Originally Posted by jerryd View Post
Glad they are of some help, maybe that's why the 4BE1 goes so well then With this colder weather we are getting mine seems to be flying along and I actually hit 120 the other day.

Of course it could just be a new air filter and an oil change that's done it. I still keep pondering "Turbo" or "Two Stroke" as I'm still waiting on the rotec design to finalise and see if it's compatible for the engine bay
That's an easy call, they already make turbos.
Does your engine have a rotary or inline pump? I thought they were all rotary, but there's one for sale in NZ which supposedly has an inline pump.
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Old 14th July 2010, 07:07 PM
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Originally Posted by Dougal View Post
That's an easy call, they already make turbos.
Does your engine have a rotary or inline pump? I thought they were all rotary, but there's one for sale in NZ which supposedly has an inline pump.
Looks like a rotary in that last pic Dougal.
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Old 15th July 2010, 05:55 AM
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Quote:
Originally Posted by Dougal View Post
Thanks Jerry, they're exactly what I wanted to see.

I wasn't sure if the 4BE1 used that particular manifold, but your pics confirm it does.
Dougal just a quick note my 1990 4BD1 has that same manifold with the offset in the middle section to split the air. I think you find it was a later modification on 4BD1 motors.
Garry
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Old 15th July 2010, 06:13 AM
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Originally Posted by garryseries3 View Post
Dougal just a quick note my 1990 4BD1 has that same manifold with the offset in the middle section to split the air. I think you find it was a later modification on 4BD1 motors.
Garry
The injector lines are different too on the later 4BD1's with this manifold, so you will need them if you install it.
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Old 15th July 2010, 07:48 AM
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Quote:
Originally Posted by garryseries3 View Post
Dougal just a quick note my 1990 4BD1 has that same manifold with the offset in the middle section to split the air. I think you find it was a later modification on 4BD1 motors.
Garry
That's interesting. I haven't personally seen a 4BD1T later than about 88, there are pics of many US engines on 4btswaps (used until 94 I believe) and they all seem to have the same manifold I have.
Do you know what market your engine was originally sold into?

Regarding the injector lines, there's a thread on here somewhere (just been searching, can't find it) of Andrew E (there are a lot of variations on that username) doing the manifold swap on his 4BD1T to that 4BE style. If injector lines needed done there should be mention of it.
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