Zoom, Zoom, Zoom
03-04-2003 | 12:36 AM
#16
928 Engine Re-Re-Rebuild Specialist
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From: Brighton, MI
Guys:
The picture I posted above IS of Rob's car.
A few more:
<a href="http://members.rennlist.com/bigdave/Porsche%20002.jpg" target="_blank">Engine Bay</a>
<a href="http://members.rennlist.com/bigdave/Porsche%20004.jpg" target="_blank">Side View</a>
The picture I posted above IS of Rob's car.
A few more:
<a href="http://members.rennlist.com/bigdave/Porsche%20002.jpg" target="_blank">Engine Bay</a>
<a href="http://members.rennlist.com/bigdave/Porsche%20004.jpg" target="_blank">Side View</a>
03-04-2003 | 09:45 AM
#17
In Your Face, Ace
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From: New Orleans
</font><blockquote><font size="1" face="Verdana,Tahoma,Helvetica">quote:</font><hr /><font size="2" face="Verdana,Tahoma,Helvetica">Originally posted by Anthony Tate:
<strong>Just one question, can the 350 Chevy run 140-150+ mph all day, day after day?
Anthony Tate
79/928 Silver Metallic</strong></font><hr /></blockquote><font size="2" face="Verdana,Tahoma,Helvetica">If it's built correctly, yes.
<strong>Just one question, can the 350 Chevy run 140-150+ mph all day, day after day?
Anthony Tate
79/928 Silver Metallic</strong></font><hr /></blockquote><font size="2" face="Verdana,Tahoma,Helvetica">If it's built correctly, yes.
03-04-2003 | 11:44 AM
#18
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Thanks for the feedback everyone. And the pictures Dave. Your comments are appreciated.
I'm going to keep the 3 speed. The cam I used in the LT1 gives it a lot of low end torque so it seems to work real well. These old knees are grateful for automatic too.
I've posted some pictures here
<a href="http://mywebpages.comcast.net/robmb/" target="_blank">http://mywebpages.comcast.net/robmb/</a>
I plan to add some dialog but haven't gotten to it yet.
Since those pictures were taken I've moved the intake and generally cleaned up the engine bay.
As to whether it will run 140-150 MPH all day every day. I built this engine myself but I'm no Bruce McLaren, I don't know. I haven't tried it. I'll let the LeMans and Daytona folk sort that out.
I do know that my 80 928 has the power potential to keep up with later model 928s, new Corvettes and many other late model cars. Whether the 23 year old suspension or my driving ability is up to it is a question that remains unanswered. Until then I just plan to have a lot of fun with it. If the engine blows I can have a local Chevy dealer drop in a brand new one for less than 5k.
Hmmmm,,, Now that I think about it,,, maybe I'll push it a bit harder until it does blow. And then for about the same price; if I do it my self, I could have it stroked, bored,,ported,,,let's see,,,400 Hp would require,,,,,(walking away muttering to myself).
I'm going to keep the 3 speed. The cam I used in the LT1 gives it a lot of low end torque so it seems to work real well. These old knees are grateful for automatic too.
I've posted some pictures here
<a href="http://mywebpages.comcast.net/robmb/" target="_blank">http://mywebpages.comcast.net/robmb/</a>
I plan to add some dialog but haven't gotten to it yet.
Since those pictures were taken I've moved the intake and generally cleaned up the engine bay.
As to whether it will run 140-150 MPH all day every day. I built this engine myself but I'm no Bruce McLaren, I don't know. I haven't tried it. I'll let the LeMans and Daytona folk sort that out.
I do know that my 80 928 has the power potential to keep up with later model 928s, new Corvettes and many other late model cars. Whether the 23 year old suspension or my driving ability is up to it is a question that remains unanswered. Until then I just plan to have a lot of fun with it. If the engine blows I can have a local Chevy dealer drop in a brand new one for less than 5k.
Hmmmm,,, Now that I think about it,,, maybe I'll push it a bit harder until it does blow. And then for about the same price; if I do it my self, I could have it stroked, bored,,ported,,,let's see,,,400 Hp would require,,,,,(walking away muttering to myself).
03-04-2003 | 11:57 AM
#19
Track Day
Joined: Jan 2003
Posts: 16
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From: Washington, D.C.
Careful guys and gals, there may be a few of us conversionists lurking out here. I have followed these postings for some time, joined Rennlist, and am in the process of a V-8 installation in my 1984 928. I even put it in the registry!!! AAAGGHHH I've been outed! The project is still in the early stages. I will have some parts available though....when I am at that stage, I will list them here to fellow members before ebaying them. I'll send some pics someday! The project is not a hurry up, therapy takes time.
03-04-2003 | 01:09 PM
#20
Drifting
Joined: Jul 2002
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From: Los Angeles, CA
Nice cars...
It's cool to see that it is so simple to do.
If I ever am faced with a blown engine, I will have to do the price comparison. It would be nice to have a stroker 928 motor, but if the goal is low-end torque around town, an american engine would fit the bill better. It may not be good for 150mph all day long, but few of us drive that way, especially in the city. But stoplight to stoplight, american torque is fun. And in a car that handles like the 928, it is a pretty good combo...
It's cool to see that it is so simple to do.
If I ever am faced with a blown engine, I will have to do the price comparison. It would be nice to have a stroker 928 motor, but if the goal is low-end torque around town, an american engine would fit the bill better. It may not be good for 150mph all day long, but few of us drive that way, especially in the city. But stoplight to stoplight, american torque is fun. And in a car that handles like the 928, it is a pretty good combo...
03-04-2003 | 01:40 PM
#21
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From: Edmonton, Ab
Hybridization is an entertaining and sometimes practical pass-time. My first experience was as a teenager when we borrowed a friend's mother's Austin Minor engine as swapped it into my Bugeye Sprite. 850cc to 1500cc....... made me my first rocket-ship!! <img border="0" alt="[burnout]" title="" src="graemlins/burnout.gif" />
Next, after university, and the practice started to roll, my 74 240Z required a tune-up..... so we went 400 SBC/TH350, which was a blast in town with the stock 370 rear gear-set, but it was crappy on gas and tires!! <img border="0" title="" alt="[Eek!]" src="eek.gif" />
Then came kids, and the "family car" happened. My '86 Vanden Plas dropped a piston one day, and soon after I recovered from Jaguar's R/R estimate, I spent the winter converting the sedan to BBC 454/700R4. That was possibly the BEST car I have owned to date. 454 cubes and monster torque through the ultra-low 1st gear of the 700R4, fed through the 2.88 rear gear-set, and 30%OD gave me a rocket off the line, and far better mileage than the original drive-train. <img border="0" alt="[king]" title="" src="graemlins/r.gif" />
Then, a brief foray with motorcycles as the son grew older. <img border="0" alt="[ouch]" title="" src="graemlins/c.gif" />
Now, the kids are off to school and I needed something to play with, again. I looked at some XJS models and the p-car. Always loved the 928 and found a clean one, so the current exercise is refurbish, and drive......... but if push comes to shove some day, that LT1 would be a sweet alternative to an already incredible driveline.
Next, after university, and the practice started to roll, my 74 240Z required a tune-up..... so we went 400 SBC/TH350, which was a blast in town with the stock 370 rear gear-set, but it was crappy on gas and tires!! <img border="0" title="" alt="[Eek!]" src="eek.gif" />
Then came kids, and the "family car" happened. My '86 Vanden Plas dropped a piston one day, and soon after I recovered from Jaguar's R/R estimate, I spent the winter converting the sedan to BBC 454/700R4. That was possibly the BEST car I have owned to date. 454 cubes and monster torque through the ultra-low 1st gear of the 700R4, fed through the 2.88 rear gear-set, and 30%OD gave me a rocket off the line, and far better mileage than the original drive-train. <img border="0" alt="[king]" title="" src="graemlins/r.gif" />
Then, a brief foray with motorcycles as the son grew older. <img border="0" alt="[ouch]" title="" src="graemlins/c.gif" />
Now, the kids are off to school and I needed something to play with, again. I looked at some XJS models and the p-car. Always loved the 928 and found a clean one, so the current exercise is refurbish, and drive......... but if push comes to shove some day, that LT1 would be a sweet alternative to an already incredible driveline.
03-04-2003 | 02:07 PM
#22
Nordschleife Master
Joined: Sep 2002
Posts: 5,848
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From: Gilbert, AZ
Theres an old saying, different stokes for different folks.
The idea of inplanting a LT1 in a 928 is appealing but, I feel the Porsche wouldn't be a Porsche unless it had a Porsche motor. Maybe I'm just **** retentive.
That's why I chose a S2 - everything I wanted, intital purchase price very reasonable, and HP almost comparable to later year sharks.
The downside is the cost factor for repairs and parts. Yes, GM parts are a dime a dozen but then again, a Porsche with a Chevy engine isn't 100% pure Stuttgart. (even though the GM powered 928s have great power).
If I were to do a conversion, I'd probaly go with the New Dodge Hemi 5.7L. 345 HP w/345 Ft Lbs Trq.
or better yet, the supercharged (whipple) Hemi 5.7l with 460hp and 480ft lbs of Trq. Now, that's some power! Supposedly, it would work with minor mods. The new Hemi uses a Mercedes Transmission to boot!. I just need to do some research to find out what all is entailed.
The idea of inplanting a LT1 in a 928 is appealing but, I feel the Porsche wouldn't be a Porsche unless it had a Porsche motor. Maybe I'm just **** retentive.
That's why I chose a S2 - everything I wanted, intital purchase price very reasonable, and HP almost comparable to later year sharks.
The downside is the cost factor for repairs and parts. Yes, GM parts are a dime a dozen but then again, a Porsche with a Chevy engine isn't 100% pure Stuttgart. (even though the GM powered 928s have great power).
If I were to do a conversion, I'd probaly go with the New Dodge Hemi 5.7L. 345 HP w/345 Ft Lbs Trq.
or better yet, the supercharged (whipple) Hemi 5.7l with 460hp and 480ft lbs of Trq. Now, that's some power! Supposedly, it would work with minor mods. The new Hemi uses a Mercedes Transmission to boot!. I just need to do some research to find out what all is entailed.
03-04-2003 | 02:07 PM
#23
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From: Dearborn Heights, MI
There's a few things I just remembered.
I did have to trim about 1/2" off the right side of the fuse box cover, so the GM ECU would fit next to it and alter the fan shroud to accommodate the dual 11" fans. So the not cutting statment is not entirely true.
And I didn't bother to hook up the cruise control yet. I've got a new 52 MM throttle body coming this week so maybe I'll get it done along with installing that.
BC.
And there's a lot of stoplights here in Michigan with tons of Mustangs Camaros, and Corvettes to mess with. With 70 MPH limits on most of the interstates here and traffic moving at 85 most of the time, acceleration lanes and ramps take on quite an allure.
Brian,
That 86 Vanden Plas/454 BBC, now there's a project I would have liked.
I did have to trim about 1/2" off the right side of the fuse box cover, so the GM ECU would fit next to it and alter the fan shroud to accommodate the dual 11" fans. So the not cutting statment is not entirely true.
And I didn't bother to hook up the cruise control yet. I've got a new 52 MM throttle body coming this week so maybe I'll get it done along with installing that.
BC.
And there's a lot of stoplights here in Michigan with tons of Mustangs Camaros, and Corvettes to mess with. With 70 MPH limits on most of the interstates here and traffic moving at 85 most of the time, acceleration lanes and ramps take on quite an allure.
Brian,
That 86 Vanden Plas/454 BBC, now there's a project I would have liked.
03-04-2003 | 02:49 PM
#24
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From: IN BETWEEN A FROZEN CONCOCTION AND INDECISION
FWIW…Here’s my take on the Chevy conversion theory.
If your 928 was an earlier model, simply getting old and looking wore out inside and out, then I’d say it wouldn’t be wise to drop thousands of dollars (8-9K…?) into a Porsche rebuilt 928 engine for a 928 body only worth a few K’s. Getting anywhere close to your investment back would be way tough. Of course, that being said I know we all don’t expect to sell our sharks for more then what we paid for them anyway but you’d loose less by dropping in a hybrid 350 then a rebuilt P-engine.
My other concern would be the ability to re-sell it. I would think there’s less of an audience for the converted sharks.
However, if money is no issue with no future plans of selling the car…then it’s all a mute point and that being said…the chevy engine is my all time favorite toy to tinker with although that new Hemi sounds tasty.
As has been said…different strokes for different strokes.
Party on Rob, I think it's cool that you're keeping another shark on the road. Just a different route then I would take.
<img border="0" alt="[typing]" title="" src="graemlins/yltype.gif" />
If your 928 was an earlier model, simply getting old and looking wore out inside and out, then I’d say it wouldn’t be wise to drop thousands of dollars (8-9K…?) into a Porsche rebuilt 928 engine for a 928 body only worth a few K’s. Getting anywhere close to your investment back would be way tough. Of course, that being said I know we all don’t expect to sell our sharks for more then what we paid for them anyway but you’d loose less by dropping in a hybrid 350 then a rebuilt P-engine.
My other concern would be the ability to re-sell it. I would think there’s less of an audience for the converted sharks.
However, if money is no issue with no future plans of selling the car…then it’s all a mute point and that being said…the chevy engine is my all time favorite toy to tinker with although that new Hemi sounds tasty.
As has been said…different strokes for different strokes.
Party on Rob, I think it's cool that you're keeping another shark on the road. Just a different route then I would take.
<img border="0" alt="[typing]" title="" src="graemlins/yltype.gif" />
03-04-2003 | 03:00 PM
#25
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From: Costa Mesa, CA
Except for the bow tie and "Corvette" on the covers - I like it.
I am no purist, and have often wondered about doing such a conversion. It seems - compared to all the threads I've read on 928 engine mods - that this is certainly an alternative. I think especially here in California where emissions are such a PITA, that a conversion would be appealing.
Let's see, I'll need another wrecked 928, a Jacquemond kit, an LT-1... Honey, can I have the check book...
I am no purist, and have often wondered about doing such a conversion. It seems - compared to all the threads I've read on 928 engine mods - that this is certainly an alternative. I think especially here in California where emissions are such a PITA, that a conversion would be appealing.
Let's see, I'll need another wrecked 928, a Jacquemond kit, an LT-1... Honey, can I have the check book...
03-04-2003 | 05:35 PM
#27
Track Day
Joined: Jan 2003
Posts: 16
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From: Washington, D.C.
For those of you that might like to read some interesting articles on the 928 conversion, (I'll read anything about a 928)try these.
<a href="http://www.patedwards.net/conversion.html" target="_blank">http://www.patedwards.net/conversion.html</a>
<a href="http://pmckiernan.tripod.com/79-928.html" target="_blank">http://pmckiernan.tripod.com/79-928.html</a>
Bill
<a href="http://www.patedwards.net/conversion.html" target="_blank">http://www.patedwards.net/conversion.html</a>
<a href="http://pmckiernan.tripod.com/79-928.html" target="_blank">http://pmckiernan.tripod.com/79-928.html</a>
Bill
03-04-2003 | 09:28 PM
#30
We had a choice?
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From: Texas
Okay, I will buy that if "properly built" a 350 might hold up over the long haul. I can understand someone wanting more power w/conversions,SC/TC ect. ect. While I guess I'm hanging on the purist's side, there's just something about the OB 928 engines that is..... shall I dare say, Art? The thought of something so beautiful being replaced with a small block Chevy ......SHUDDERRRRRRRRRRRRRRR! JMHO
Anthony Tate
79/928 Silver Metallic
(recovering from minor surgery) <img border="0" alt="[cheers]" title="" src="graemlins/beerchug.gif" />
Anthony Tate
79/928 Silver Metallic
(recovering from minor surgery) <img border="0" alt="[cheers]" title="" src="graemlins/beerchug.gif" />