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Mon Feb 27, 2012 7:19 pm

Yeah i know you werent discouraging, ive been to the sites already, im going 1900cc for sure, not sure what type or pistons, but i think i could have like 1200 invested and be quick -ish and reliable

Mon Feb 27, 2012 9:49 pm

CrJdMc wrote: The pistons and cylinders...
http://www2.cip1.com/ProductDetails.asp?ProductCode=ACC-C10-5211

Dont need any discouragement busdaddy thanks though.

96mm cylinders are typically just 94mm cylinders that have been bored out leaving the walls a full 1mm thinner and many have had problems with them in naturally aspirated engines. Since you are planning on turboing your engine you should probably go with the thicker wall of the 1800 cylinders. AA has had problems with getting the pin heights right on many of their pistons as well, and since the 1900 kits are not widely used its anyone guess whether they have the pin heights right on them or not. With flat top 96 mm pistons you might have a problem with too much compression as well, assuming the pin height is correct. You really need to talk to someone with lots of experience with these engines before spending any money.

Tue Feb 28, 2012 3:37 am

Turboing a 1700-1800 gets you about 140hp nowhere near the 200hp you want.
Turboing a 2000 gets you head leaks as the sealing area is pretty thin to hold the boost.

I know of several turbo 1.7l 914 that do fine with 5-10psi but they run CSI FI.

Tue Feb 28, 2012 8:18 am

ive been doing alot of research now, i think im just going to fully rebuild my motor for performance and keep it naturally aspirated, i hope i can have 110hp out of a 1900 or maybe a 2100 if the pistons will go in my block. I know someone already answered this, but i was wandering if anyone had any experience putting 2.0 or 2.1L pistons and cylinders in a 1.7?

Tue Feb 28, 2012 11:58 am

From what I understand the 94mm pistons of a 2.0 will fit a 1.7 block without any machine work needed. Not sure about any 2.1 pistons. From all my research there doesn't appear to be much, if any, benefit for going above 94.

Tue Feb 28, 2012 12:36 pm

All type 4 cases except 94 and 96mm cylinders without a problem. The 1.7l heads won't except anything other than 90.mm cylinders unless you have them bored out. Thats a waste as they have smaller intake diameter so if you go to bigger cylinders get the later heads with the bigger intakes.

110hp? Plan on building a Camper Special then as that is what you are trying for with that hp.

Tue Feb 28, 2012 2:13 pm

So i am going to buy all the Performance parts and 2.0l heads, And clean my engine up nice and rebuild it, Is there a kit for the camper special? is so how much is it?

Tue Feb 28, 2012 7:11 pm

You are two years too late on getting a Camper Special engine kit last I heard. They were going for about $4000 complete with nearly all new parts or restored to like new.
You can build your own buying the key components from Jake.

Wed Feb 29, 2012 11:22 am

just get a 6 cylinder corvair engine and be done with it. :roll:

Wed Feb 29, 2012 9:01 pm

haha no.

Sat Dec 08, 2012 12:06 pm

I would like to know what compression ratio I should achieve on my 1700 type IV block, standard stroke with a 96 mm big bore kit. I'm machining the 1700 heads since I have 2 sets of them and really don't want to go through any major work by going to the later heads. I was told by the dealer that sold me the big bore kit that it should be 8.5:1 but I would like a 2nd opinion from the knowledgeable folks on TheSamba. :)

Sat Dec 08, 2012 3:38 pm

If you are using the 66mm crank with the 96mm cylinders it will be a
1911 cc engine.
8.5 compression is a little to high without knowing what cam? and the
info on the heads which,you will have to CC.

Post the part # for your heads with the letter included.

The largest combustion chambers for a 1.7 head is 021 101 371 H approx; 53 ml.

The smallest is the J and Q approx: 47ml.

Sat Dec 08, 2012 3:57 pm

I have 021 101 371 Q heads. As far as I know the cam is factory stock (~7mm lift).

Sat Dec 08, 2012 6:07 pm

The Q Heads have approx: 50-52 ml. and will work well for a reliable
engine if you get the compression to 7.8 8.0 and a mild cam .

I take it you haven't split the case?
What carb set up will you use

Sat Dec 08, 2012 7:10 pm

The case has been split and all the internals will be installed tomorrow. Then I'll be checking the volume so I can get to the 8.0 range. Hopefully I'll only have to machine the diameter of the heads so the jugs will fit. I'll be using my Empi dual carb setup and all the tin, mustache bar, alternator, fan/ housing that's currently on my 1700 Westy.

Case is painted to match the Westy and is ready for rebuild

Current 1700 motor in my Westy

Sat Dec 08, 2012 8:38 pm

Just to clarify, will one of y'all post links to the info sources to which you're referring for T4 engine building?

Sat Dec 08, 2012 11:13 pm

SCRIVYSCRIV.
What do mean post links to info sources for type 4 building? We are the source :)
Do you mean parts vendors? for the 411 based engine.
.

Which reminds me of the last time i was in Memphis and asked the waitress
for directions to the hotel i was staying at.I drove for over 30 minutes looking
for SEEKIN ST .before i realized she was actually saying Second Street

Sun Dec 09, 2012 2:54 am

ummmmm type four engine building????????????????

Sun Dec 09, 2012 3:06 am

Choose your parts and builder carefully. Well one is gone and the otherone does't have time.

Sun Dec 09, 2012 5:24 am

Dkp - Ha! We definitely have a bit of a drawl down here! It's tough to understand some folks here if you didn't grow up in the South :)

I mean more links like the ones posted to Raby, etc. There's a lot more info on T1 engines than T4's and I've had a hard time finding the same quality of information for the T4.