Project (20B clip or motorset?)
#1
Project (20B clip or motorset?)
Is there any input you guys can give on wether it its better to buy a clip or motorset?
My Honors engineering class this semester requires an indepenent project, an I thought about trying to make a "How to, 20B into a RX7 conversion" Basically there are not really any guidelines to follow only that it has to work in realife, to make it cost effective and have drawings to prove it. I was hoping you guys might give me a few clues as to problems that are incountered during the swap.
I have been trying to do alot of research over the past couple of days and i have only really come up with:
Steering rack
transmission moving back
extra weight added
egine mounts
Anything else? LMK PM or reply here. I will keep you all informed with my progress!
Thanks!
My Honors engineering class this semester requires an indepenent project, an I thought about trying to make a "How to, 20B into a RX7 conversion" Basically there are not really any guidelines to follow only that it has to work in realife, to make it cost effective and have drawings to prove it. I was hoping you guys might give me a few clues as to problems that are incountered during the swap.
I have been trying to do alot of research over the past couple of days and i have only really come up with:
Steering rack
transmission moving back
extra weight added
egine mounts
Anything else? LMK PM or reply here. I will keep you all informed with my progress!
Thanks!
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Re: Project (20B clip or motorset?)
Originally posted by eyecandy
Steering rack
transmission moving back
extra weight added
egine mounts
Steering rack
transmission moving back
extra weight added
egine mounts
Grasshopper, what is the first step in the problem solving process?
#6
Evil Aviator, I do not understand what you are asking? If you want the steps here ya go!
1. Understand/Define the Problem
3. Gather info (Brainstorm)
2. Make solutions to the problem
3. test the solutions(obvisiously thats going be a little hard) -understand/define new problems
4. Retry until prblem is sloved
1. Understand/Define the Problem
3. Gather info (Brainstorm)
2. Make solutions to the problem
3. test the solutions(obvisiously thats going be a little hard) -understand/define new problems
4. Retry until prblem is sloved
#7
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Re: Re: Project (20B clip or motorset?)
Originally posted by Evil Aviator
A question for the honors engineering student who is totally missing the boat IMO...
Grasshopper, what is the first step in the problem solving process?
A question for the honors engineering student who is totally missing the boat IMO...
Grasshopper, what is the first step in the problem solving process?
mike
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#8
I am not doing the swap, i am only coming up with all the problems and solutions for them. But i need to state all costs. I don't care if it costs $100k to do the swap, its just a project for my class, i do not have to complete it. Thats why i am asking people in the forum here.
And when i mean "cost effective" all the time, money weight must be insignificant compared to the gains.
And when i mean "cost effective" all the time, money weight must be insignificant compared to the gains.
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A front clip is really no advantage over a motorset that includes the coils and igniters. Most of the rest of the clip is useless for a FC/FD project.
Gary
20B S4 RX7 drag car
20B JCESE Cosmo
Gary
20B S4 RX7 drag car
20B JCESE Cosmo
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Re: Re: Re: Project (20B clip or motorset?)
Originally posted by eyecandy
Evil Aviator, I do not understand what you are asking? If you want the steps here ya go!
1. Understand/Define the Problem
Evil Aviator, I do not understand what you are asking? If you want the steps here ya go!
1. Understand/Define the Problem
Now, look at what you posted. Are you identifying problems, or are you identifying fixes without addressing the problems?
Originally posted by eyecandy
Steering rack
transmission moving back
extra weight added
egine mounts
Steering rack
transmission moving back
extra weight added
egine mounts
Also, depending on what you remove from the car, the total static weight may not be an issue. Pettit's 20B Banzai is actually a little lighter than a stock FD. Your "problem" here would be the static weight distribution, which can be solved by moving some components, such as the battery. Another weight "problem" would be the polar moment of inertia, which I don't believe has been addressed by any of the 20B conversions that I am aware of.
Hopefully you understand my point now. You may also now see why there isn't just one bolt-on kit for the 20B conversion, as there are many different ways to skin this cat. Also, if you consider synergism (which you should), a given solution to one of the problems may affect other problems.
Originally posted by j9fd3s
look at your wallet!
look at your wallet!
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Re: Re: Re: Re: Project (20B clip or motorset?)
Originally posted by Evil Aviator
Also, if you consider synergism (which you should), a given solution to one of the problems may affect other problems.
Also, if you consider synergism (which you should), a given solution to one of the problems may affect other problems.
mike
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Originally posted by rotaspec
A front clip is really no advantage over a motorset that includes the coils and igniters. Most of the rest of the clip is useless for a FC/FD project.
A front clip is really no advantage over a motorset that includes the coils and igniters. Most of the rest of the clip is useless for a FC/FD project.
Originally posted by j9fd3s
i had a very good example if that the other day. tuning the twin su's on my tr3. imagine 2 different ecu's to run your engine, and since they share a common plenum, any change you make to one affects all. add in a sticking dashpot and you can have too rich and too lean at the same time.
mike
i had a very good example if that the other day. tuning the twin su's on my tr3. imagine 2 different ecu's to run your engine, and since they share a common plenum, any change you make to one affects all. add in a sticking dashpot and you can have too rich and too lean at the same time.
mike
Originally posted by eyecandy
Fianlly some good input! Thanks!
So motor set it is.
Fianlly some good input! Thanks!
So motor set it is.
http://www.geocities.com/evilaviator/
Also see this site which covers some of the issues of an FC conversion, which is very similar to an FD conversion.
http://www.se-rx7.com/20b/
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From what guys have posted on here about fitting the 20B into an FD, and my own experience with the same on an FC, I would have to say the FC seems much easier. No PPF to get around for a start, and the 20B sits in the FC bay almost like it was meant to except for the height of that damn intake manifold!
Gary
Gary
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Originally posted by Evil Aviator
Geez, can't you get a divided plenum? That sounds like a nightmare.
Geez, can't you get a divided plenum? That sounds like a nightmare.
mike
Last edited by j9fd3s; 07-30-03 at 12:52 PM.
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