Home  |  Forums  |  914 Info  |  Blogs
 
914World.com - The fastest growing online 914 community!
 
Porsche, and the Porsche crest are registered trademarks of Dr. Ing. h.c. F. Porsche AG. This site is not affiliated with Porsche in any way.
Its only purpose is to provide an online forum for car enthusiasts. All other trademarks are property of their respective owners.
 

Welcome Guest ( Log In | Register )

2 Pages V  1 2 >  
 Reply to this topicStart new topic
> Good Deal on Evilbay?, Pistons and cylinders - Mahle's
tracks914
post Dec 13 2003, 10:30 AM
Post #1


Canadian Member
****

Group: Benefactors
Posts: 2,083
Joined: 15-January 03
From: Timmins, Ontario, Canada
Member No.: 153
Region Association: None
Pistons and Cylinders
I believe these are for a 2.0 L. Would they be of any use to someone rebuilding a 1.7?
Price looks good but whats the catch?
Tx
Doug
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Katmanken
post Dec 13 2003, 10:58 AM
Post #2


You haven't seen me if anybody asks...
****

Group: Members
Posts: 4,738
Joined: 14-June 03
From: USA
Member No.: 819
Region Association: Upper MidWest
Go over to Shop Talk Foums and do a search on "West Coast Core".

Not sure if they are all "Mahle" parts.

Ken
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Mark Henry
post Dec 13 2003, 11:03 AM
Post #3


that's what I do!
***************

Group: Members
Posts: 20,065
Joined: 27-December 02
From: Port Hope, Ontario
Member No.: 26
Region Association: Canada
It will give you the wrong deck height. You would also have to open up the head bores.

You would need a 2.0L crank set to do it right.

What are you going to use carb or FI?
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
tracks914
post Dec 13 2003, 06:00 PM
Post #4


Canadian Member
****

Group: Benefactors
Posts: 2,083
Joined: 15-January 03
From: Timmins, Ontario, Canada
Member No.: 153
Region Association: None
I have 2 - 1.7's. One is complete and siezed.(spark plug missing) The other was running well when I bought the car and tore it down. Currently it is on the engine stand, stripped, and ready to split the crankcase and take journal readings.
I want to keep one of my engines original to stay with the car. So far it is all still "original".
I'm just weighing out my options for the other engine. $229 for a complete set of cylinders, pistons and rings sounds pretty reasonable if I can make them work on one of my engines.
Redoing the heads is not a problem but will things like, will my 1.7 engine tin fit over the 2.0 cylinders?
What is the cc's of 2.0 heads vs 1.7 heads? Will they even fit on the 2.0 cylinders? Will it change the compression ratio to the point that I would have to run higher octane gas?
Since the stroke is different would I end up with a 1.9L?
Would a 1.9L work with the 1.7 FI or should it run carbs for a more variable set up?
I have done a fair bit of mix and matching with V8's 305 to 350 - 318 to 340 to 360 (great success) and such but never with German engines.
Sounds like a challenging project but I just don't want to waste my money.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
tracks914
post Dec 13 2003, 06:07 PM
Post #5


Canadian Member
****

Group: Benefactors
Posts: 2,083
Joined: 15-January 03
From: Timmins, Ontario, Canada
Member No.: 153
Region Association: None
The add states that pistons are dish topped. Optional flat tops.
Mine are domed topped.
What are original 2.0's and 1.8's?
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Mark Henry
post Dec 13 2003, 06:23 PM
Post #6


that's what I do!
***************

Group: Members
Posts: 20,065
Joined: 27-December 02
From: Port Hope, Ontario
Member No.: 26
Region Association: Canada
You will have too much deck height and that means to low of a CR.
1.7 and 1.8 have 66mm cranks, 2.0 has a 71mm, that would give you a extra 6mm of deck, your going the wrong way.
If opening up the head is no problem then get the 1.8 pistons. Should work OK with the stock FI (but I could be wrong).

The stock (USA) 2.0 piston does have a dish, but it's nowhere near the huge dish bus pistons have. Those are a bus piston, not 914.

The tin will fit OK, all type 4 engines look the same on the outside, except for the 2.0 914 heads.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
tracks914
post Dec 14 2003, 02:20 PM
Post #7


Canadian Member
****

Group: Benefactors
Posts: 2,083
Joined: 15-January 03
From: Timmins, Ontario, Canada
Member No.: 153
Region Association: None
Can the 2.0 cylinders be machined down to a 66mm crank stroke? It would apear that they could be put in a lathe and have 8mm machined off one end without too much trouble.
Are 2.0L (914) pistons flat topped, dished or domed?
Anyone know the cc difference between the 3 types of heads?
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
DuckRyder
post Dec 14 2003, 02:28 PM
Post #8


Avatars Mode: OFF because of the recalcitrant few.
***

Group: Benefactors
Posts: 767
Joined: 8-January 03
From: Georgia
Member No.: 110
2.0 US pistons are dished.
2.0 Euro pistons are flat tops.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Mark Henry
post Dec 14 2003, 02:36 PM
Post #9


that's what I do!
***************

Group: Members
Posts: 20,065
Joined: 27-December 02
From: Port Hope, Ontario
Member No.: 26
Region Association: Canada
Your going about it the wrong way. If you don't believe me, ask over on the STF.

Also is this the company selling these piston sets?

http://www.shoptalkforums.com/viewtopic.php?t=61326
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Brad Roberts
post Dec 14 2003, 02:39 PM
Post #10


914 Freak!
***************

Group: Members
Posts: 19,148
Joined: 23-December 02
Member No.: 8
Region Association: None
The Euro's have a 3cc dish (not flat)

I have a 2.0 crank I can sell you with rods for 150$

Forget the whole "machine them for a 66 crank"

If you want to do that.. buy a set of 96's for a 66mm crank and make a 1911.

B
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
tracks914
post Dec 14 2003, 02:46 PM
Post #11


Canadian Member
****

Group: Benefactors
Posts: 2,083
Joined: 15-January 03
From: Timmins, Ontario, Canada
Member No.: 153
Region Association: None
QUOTE(Mark Henry @ Dec 14 2003, 12:36 PM)
Your going about it the wrong way. If you don't believe me, ask over on the STF.

Also is this the company selling these piston sets?

http://www.shoptalkforums.com/viewtopic.php?t=61326

I read the thread, thanks, I'l stay clear of that guy. (IMG:style_emoticons/default/chair.gif)
Those weren't exactly what I was looking for, I am mostly just trying to figure out what can be done with these engines.There seems to be enough people tinkering with them that I was wondering what combinations work and what ones don't.
(eg. a set of 305 FI heads put on an older 350 smogger engine with raise the compression ratio and increase performance to the tune of about 30 hp and 800 rpm, by then the smaller valves limit any more output)
Does any of this logic apply to the 914?
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
tracks914
post Dec 14 2003, 02:50 PM
Post #12


Canadian Member
****

Group: Benefactors
Posts: 2,083
Joined: 15-January 03
From: Timmins, Ontario, Canada
Member No.: 153
Region Association: None
QUOTE(Brad Roberts @ Dec 14 2003, 12:39 PM)

If you want to do that.. buy a set of 96's for a 66mm crank and make a 1911.

Here is what I'm talking about (IMG:style_emoticons/default/smile.gif) options!!!
1.911 will it work with 1.7 FI or would I have to convert to carbs?
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Brad Roberts
post Dec 14 2003, 02:55 PM
Post #13


914 Freak!
***************

Group: Members
Posts: 19,148
Joined: 23-December 02
Member No.: 8
Region Association: None
It will work with the stock injection (I normally install 2.0 injectors)

We dont have over 1million Small Block Chevy combo's to choose from so the options are slim.

My favorite combo in the past was a 1911 engine with true 2.0 914 heads and a nice cam with .450 lift and carbs. The 2.0 heads really wake up a 1911 engine (or even a 1.8 for that fact). What you end up with is a short stroke large bore combo that likes to REV right now.

B
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
DuckRyder
post Dec 14 2003, 02:56 PM
Post #14


Avatars Mode: OFF because of the recalcitrant few.
***

Group: Benefactors
Posts: 767
Joined: 8-January 03
From: Georgia
Member No.: 110
QUOTE(Brad Roberts @ Dec 14 2003, 04:39 PM)
The Euro's have a 3cc dish (not flat)

....

I stand corrected, after looking at mine I should have said:

2.0 Euro pistons are virtually flat tops. (IMG:style_emoticons/default/smile.gif) 3cc seems generous, but I am sure that is right.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Brad Roberts
post Dec 14 2003, 02:59 PM
Post #15


914 Freak!
***************

Group: Members
Posts: 19,148
Joined: 23-December 02
Member No.: 8
Region Association: None
I wouldnt have corrected you ...but several companies do sell a 94mm true flat top with NO dish. I have had people in the past pull apart engines I built and call me up saying "you said these where flat tops".. I quickly stopped using the term. Educating people about the parts is key.


B
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
tracks914
post Dec 14 2003, 03:04 PM
Post #16


Canadian Member
****

Group: Benefactors
Posts: 2,083
Joined: 15-January 03
From: Timmins, Ontario, Canada
Member No.: 153
Region Association: None
QUOTE(Brad Roberts @ Dec 14 2003, 12:55 PM)
My favorite combo in the past was a 1911 engine with true 2.0 914 heads and a nice cam with .450 lift and carbs. The 2.0 heads really wake up a 1911 engine (or even a 1.8 for that fact). What you end up with is a short stroke large bore combo that likes to REV right now.

Now this sounds like a fun project for my spare engine (IMG:style_emoticons/default/mueba.gif)
I'll have to get it apart to see what is salvagable so I can start looking for parts.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
DuckRyder
post Dec 14 2003, 03:06 PM
Post #17


Avatars Mode: OFF because of the recalcitrant few.
***

Group: Benefactors
Posts: 767
Joined: 8-January 03
From: Georgia
Member No.: 110
Oh, it is fine, you are right they do have a dish and we should have the right info out there.

I did not realize they had a dish until you said that. (IMG:style_emoticons/default/pray.gif)
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Brad Roberts
post Dec 14 2003, 03:08 PM
Post #18


914 Freak!
***************

Group: Members
Posts: 19,148
Joined: 23-December 02
Member No.: 8
Region Association: None
Here is what I have used in the past:

66mm counter weighted crank (was 199.00 in the past)
2.0 heads with stock rebuild
96mm Pistons/Cylinders
European Racing "H grind" camshaft
2.0 heat exchangers or the late 1.8 heat exchangers.
Balance the entire assembly.
Dual 40mm Dells or tweaked factory injection.
Bursch header/muffler


B
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
tracks914
post Dec 14 2003, 03:14 PM
Post #19


Canadian Member
****

Group: Benefactors
Posts: 2,083
Joined: 15-January 03
From: Timmins, Ontario, Canada
Member No.: 153
Region Association: None
Dyno that and it must bring you up close to the 95 - 100 hp range? What rpm does it rev to?
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Brad Roberts
post Dec 14 2003, 03:17 PM
Post #20


914 Freak!
***************

Group: Members
Posts: 19,148
Joined: 23-December 02
Member No.: 8
Region Association: None
It easily rev'd to 6k and had power to 6k and didnt poop out like a stock 2.0 at 5200rpm. I also used a HD spring on the valves.

It was at least 100hp to the rear wheels (compared to driving other 100RWHP cars)

B
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
« Next Oldest · 914World Garage · Next Newest »
 

2 Pages V  1 2 >
Reply to this topicStart new topic
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:

 

Display Mode: Standard · Switch to: Linear+ · Switch to: Outline

Track this topic · Email this topic · Print this topic · Subscribe to this forum

- Lo-Fi Version Time is now: 15th May 2024 - 03:11 PM
Invision Power Board v9.1.4 © 2024  IPS, Inc.
All rights reserved 914World.com © since 2002
914World.com is the fastest growing online 914 community!
We have it all, classifieds, events, forums, vendors, parts, autocross, racing, technical articles, events calendar, newsletter, restoration, gallery, archives, history and more for your Porsche 914 ...