CosKev3
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| posted on 6/8/20 at 03:05 PM |
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quote:
Originally posted by andygtt
130mm, but It sounds like it’s going to cause you issues at idle as it drops the ratio Quite a bit
Thanks,I'm going to have to fit a bigger bodied alternator over the winter,so should be ok then 
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mgb281
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| posted on 22/11/20 at 07:05 PM |
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Although this thread has moved away from its origins and gone to turbo AJ30's . I am fitting my AJ30/RX8 combination into a MGB. Out of
interest the 65mm (actually more like 67mm) from a late 90's Mustang GT or Crown Victoria fits perfectly on a ST200 manifold, even the TPS plug
is the same and I got mine from a very low mileage car for the princely sum of £25 including shipping from the USA!
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Partofthechaos
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| posted on 12/6/21 at 11:20 AM |
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A bit of thread resurrection!
I've managed to get the AJ30 into the engine bay, but I can't see any way of getting an alternator attached. It it possible to rotate it
180 degrees and have it hanging off the front of the engine? Anyone seen that before? I think that may be my only option unless I get into modifying
the chassis right next to the front suspension.
Also I'm going to need a smaller / remote clutch master cylinder. Any bright ideas for a good small one?
Thanks all!
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big_wasa
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| posted on 12/6/21 at 01:13 PM |
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Any pics ?
I am collecting bits to get back on with mine. I've picked up a 60a Denso styled unit from starterman. I was thinking it would go passenger side
below the exhaust.
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40inches
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| posted on 12/6/21 at 01:17 PM |
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I fitted mine where the AC pump would fit, a 40amp Denso would be smaller.
 
Description
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CosKev3
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| posted on 12/6/21 at 02:22 PM |
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Yeah mines passenger side similar position to pic above but tighter to the block as I've fitted a full size altenator now off a V6 Freelander as
my EWP max draw is 36amps and my fan 20amps.
I wouldn't fit a 40amp small Denso one,I struggled with idle voltage last year before I upgraded my EWP and fan.
It would just about maintain 12volts in standing traffic with fan on but if you put headlights on it wouldn't maintain 12volts.
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Partofthechaos
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| posted on 12/6/21 at 02:39 PM |
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Output is noted, thank you. I will make sure I get one which is big enough.
These pictures should help explain the issue. It is difficult to explain with photos, but the passenger side mounts are obscured by chassis and the
belt routing would be a nightmare. There is room at the front, but presumably the alternator would rotate the opposite direction and brackets may be
a sod.
 
Alternator location
 
Alternator location 3
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CosKev3
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| posted on 12/6/21 at 02:45 PM |
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Chassis is loads different to the old one!
That angled brace bar will need removing by the looks of it,and rework the brace once you've got a alternator mounted.
You realise you've got the later engine there with the more complicated VVT?
Early ones just had a solenoid to advance the inlet cams,which is easily controllable by a output from any ECU.
Yours will need a ECU with proper VVT control from what I've seen
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Partofthechaos
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 posted on 12/6/21 at 02:50 PM |
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Yes, I worked out that it was CVVT after I bought it. I have some ideas for ECUs, if not I understand that it is possible to remove. Alternatively I
will get a different engine.
I am reluctant to do too much chopping of the chassis, especially close to the suspension mounts. Do you think hanging the alternator out the front
won't work?
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mgb281
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| posted on 12/6/21 at 03:43 PM |
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I am mounting a second crank pulley in front of the original, this will enable me to have the alternator up high and the belt forward enough to clear
the cylinder heads. I have bought a Mazda Tribute pulley (same engine as the Jaguar, but most USA built duratec V6's had them)
https://www.ebay.co.uk/itm/324073458342?hash=item4b74488aa6:g:JbAAAOSw-a5eR4HZ which has a threaded hole in each of the three spokes. I will attach
one of these to a spacer between the two pulleys
https://www.ebay.co.uk/itm/313368011865?hash=item48f6306459%3Ag%3A0LgAAOSwxwdf8b2%7E&LH_ItemCondition=3
Mounting the alternator as you suggest will work and the only downside is that the cooling fan will be running backwards. Nearly all Honda engines
until around 2003 (depending on car model) had engines that rotated anti clockwise, one of those alternators would actually be running in the correct
rotation.
Totally separate to the subject is this question, when using one of Freddy's adapters which has been modified to take a zetec starter motor
and a Mondeo ST220 flywheel how much needs to be machined off the RX8 bellhousing to get the clutch mating distance correct? I have heard 14mm and
also just the thickness of the adapter plate.
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Partofthechaos
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| posted on 12/6/21 at 04:29 PM |
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Thank you, I will look into Honda Alternators. I will also see if I can flip the cooling fan for the alternator I have as that would be a simple
option.
Regarding the adapter plate issue mine is not yet with me, but I am interested in the answer!
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starterman
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| posted on 12/6/21 at 05:08 PM |
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quote:
Originally posted by 40inches
I fitted mine where the AC pump would fit, a 40amp Denso would be smaller.
Description
The 60 amp is the same size........................
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CosKev3
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| posted on 12/6/21 at 05:13 PM |
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I've taken 10mm off my bell housing,the size of the adapter plate,and mines working perfectly.
10mm leaves plenty of thread left to bolt a Mazda6 clutch slave cylinder on,if you take 14mm off the bell housing you have much less of the bolt hole
left.
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big_wasa
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| posted on 13/6/21 at 10:37 AM |
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quote:
Originally posted by Partofthechaos
Output is noted, thank you. I will make sure I get one which is big enough.
These pictures should help explain the issue. It is difficult to explain with photos, but the passenger side mounts are obscured by chassis and the
belt routing would be a nightmare. There is room at the front, but presumably the alternator would rotate the opposite direction and brackets may be
a sod.
Alternator location
Alternator location 3
That does indeed look a challenge.
I have seen v8's fitted with the alternator out front but I can't find any photos.
Are there any issues to spinning one back wards ?
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Partofthechaos
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| posted on 13/6/21 at 10:56 AM |
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I think it is fine, with the exception of the alternator cooling fan which would be suboptimal. I will see if I can flip it round on the one I have.
If that works then I need to make sure it is mounted rigidly enough, then all should be fine. Will just look a bit weird, that's all.
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mgb281
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| posted on 13/6/21 at 11:36 AM |
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Not the Ford or Jaguar engine but a Vauxhall V6 in a MGB, if you look at the photos on posting #15 you will see how Ian Cass overcame the same problem
on a MGB, I have not re read it but I think he used a normal rotation alternator. The only issue is heat dissipation and if its in a cool airflow
there should be no problems.
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Partofthechaos
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| posted on 13/6/21 at 03:42 PM |
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Thank you!
Sorry, maybe I am being dim, which is post #15?
[Edited on 13/6/21 by Partofthechaos]
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starterman
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| posted on 13/6/21 at 05:47 PM |
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What alternator are you trying to run backwards?
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Partofthechaos
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| posted on 13/6/21 at 06:00 PM |
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I was planning to use the one I have, which is from the MX5, an earlier one which is self regulated rather than the later ones which is ecu
regulated.
[Edited on 13/6/21 by Partofthechaos]
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Partofthechaos
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| posted on 15/6/21 at 07:31 AM |
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Ive found another difference with the CVVT engine that I didn't know about (or had forgotten). Half of the passenger side cam cover is taller
so the inlet manifold solution that you all have worked out won't work without a thicker adapter plate. Accommodating this under the bonnet
with drop the sum a bit further out of the bottom of the car and it is all ready quite low.
I'm getting close to needing another engine I think. Which is a pain! :-( Anyone want to swap?
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mgb281
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 posted on 15/6/21 at 09:30 AM |
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I was equally surprised, fitting the AJV6 engine into an MGB is a tight squeeze height wise, originally I had bought a scrap engine and although I
knew it was the CVVT type due to the four pin cops I did not realise the oil filler was so much higher than on the earlier engine. I was having the
same problem of a bulge in the bonnet or very low ground clearance, neither of which is what I wanted. Since I have a scrap engine fitted temporarily
into a scrap rubber bumper car which is fifteen miles from home and I have an early engine going into a chrome bumper car which is at home I
continually got confused regarding the dimensions. Especially since the later cars have different panels under the bonnet to accommodate V8 engines
also a different cross member which gives less height availability. Engine swaps are such fun.
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CosKev3
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| posted on 17/6/21 at 07:23 AM |
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I've never looked at a later engine in the flesh, stick with what you know is the reason I've always bought early engines 
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Partofthechaos
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| posted on 22/6/21 at 07:30 PM |
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Is anyone able to confirm that the engines are identical regardless of their previous connection to a manual or automatic 'box? Think I need an
older one...
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40inches
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| posted on 22/6/21 at 07:44 PM |
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quote:
Originally posted by Partofthechaos
Is anyone able to confirm that the engines are identical regardless of their previous connection to a manual or automatic 'box? Think I need an
older one...
Mine came with a Flex plate, flywheel bolted on fine, I think any difference would most likely be in the electronics.
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Partofthechaos
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| posted on 22/6/21 at 07:53 PM |
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That's what I was expecting, thanks.
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