Please School me on Engines Options

[mambodave]

1973 1.7.

I think I want to keep a 4.. because of weight, etc, and honestly everyone is doing sixes, so thinking about building or buying a bad ass 4....

Whos running high HP 2.0 to 2.2? What carb and or exhaust set up are you running. What are the potential differences in a 2.0 and 2.2 (baring size)

What am I going to run into droping in a "new" 4, (what else will I need to change?) Any threads on upgrading a 4? I see tons on upgrading to a 6.

And who's crating and selling them? (if anyone)
Any help is greatly appreciated.


Dave

[Todd Enlund]

1973 1.7.

I think I want to keep a 4.. because of weight, etc, and honestly everyone is doing sixes, so thinking about building or buying a bad ass 4....

Whos running high HP 2.0 to 2.2? What carb and or exhaust set up are you running. What are the potential differences in a 2.0 and 2.2 (baring size)

What am I going to run into droping in a "new" 4, (what else will I need to change?) Any threads on upgrading a 4? I see tons on upgrading to a 6.

And who's crating and selling them? (if anyone)
Any help is greatly appreciated.


Dave

What's your budget?

Stage I - dump the progressive Weber and get either D-Jet or a pair of 40 IDFs.
Stage II - build your 1.7 into a 1911 with a set of 96mm pistons/cylinders.
Stage III - Find a 2.0 and refresh it, or build it into a 2056
Stage IV - Build a 2270 with aftermarket FI or a pair of 44 IDFs.
Stage V - Trade $$ for HP direct from Jake.

I'm on the slow train direct to Stage IV... building a 2058 as I can acquire parts. Mine will be a 2058 because the crank that I got is a 78mm rather than the more common 78.4 mm stroker.

[helios]

Stage II - build your 1.7 into a 1911 with a set of 96mm pistons/cylinders.

96mm pistons/cylinders - 1.8L P/Cs? (IMG:style_emoticons/default/confused24.gif)

The reason I ask, is I had someone mention they thought the 1.8 P/Cs on a 1.7 block took the motor out to a 1911. I had assumed I only had a 1.8.

[Todd Enlund]

Stage II - build your 1.7 into a 1911 with a set of 96mm pistons/cylinders.

96mm pistons/cylinders - 1.8L P/Cs? (IMG:style_emoticons/default/confused24.gif)

The reason I ask, is I had someone mention they thought the 1.8 P/Cs on a 1.7 block took the motor out to a 1911. I had assumed I only had a 1.8.

Common Type IV engine sizes:

Stock
90mm x 66mm = 1679 (1.7)
93mm x 66mm = 1793 (1.8)
94mm x 71mm = 1971 (2.0)

Not stock
96mm x 66mm = 1911
96mm x 71mm = 2056
96mm x 78.4mm = 2270
96mm x 80mm = 2316

[mambodave]

Stage II - build your 1.7 into a 1911 with a set of 96mm pistons/cylinders.

96mm pistons/cylinders - 1.8L P/Cs? (IMG:style_emoticons/default/confused24.gif)

The reason I ask, is I had someone mention they thought the 1.8 P/Cs on a 1.7 block took the motor out to a 1911. I had assumed I only had a 1.8.

Common Type IV engine sizes:

Stock
90mm x 66mm = 1679 (1.7)
93mm x 66mm = 1793 (1.8)
94mm x 71mm = 1971 (2.0)

Not stock
96mm x 66mm = 1911
96mm x 71mm = 2056
96mm x 78.4mm = 2270
96mm x 80mm = 2316

hum...ok now you got me thinking... so with my 1.7 case... what would i need to make that a 2.2 or go for it to a 2.4? heads and pistons? Am i safe to assume my 35 year old heads should not be used, but buy new..

after reading though I belive I can tear it down and build one myself, with a little help. So I guess that expands the canvas...

[Todd Enlund]

hum...ok now you got me thinking... so with my 1.7 case... what would i need to make that a 2.2 or go for it to a 2.4? heads and pistons? Am i safe to assume my 35 year old heads should not be used, but buy new..

after reading though I belive I can tear it down and build one myself, with a little help. So I guess that expands the canvas...

Depending on the specific size that you want, you'll need pistons/cylinders, a stroked crank, clearanced rods, and other supporting parts... you don't want to put a stock camshaft into a big engine.

You can use your case, but you'll either need machine work on the heads or a set of 1.8 or 2.0 heads to get a 2.2-2.4. If you are going to go big, you'll be spending money, so you'd be best off having the head rebuilt, or just buy a good new set from Jake. Most builders agree that you don't want to go bigger than 96mm bore with iron cylinders.

I can't afford a Raby kit right now, so I'm collecting parts as I find them to build a 2258. I'm hoping to save a couple thousand $$$, but I also don't expect to get the results that Jake can produce, and I won't have Jake standing behind the engine. If you have time, are willing to keep your eyes open, and willing to take the risk and responsibility, you might be able to do what I am attempting. Otherwise, talk to Jake about a kit.

Here's what I've got so far:

78mm crank - $100.00
WebCam #163 with timing gear - $76.01
dual valve springs - $22.75
new pushrod tubes - $22.00
complete 2.0 core engine $300.00
complete 2.0 core engine with Weber 44 IDFs $400.00
set of 1.7 rockers $40.00

I also have a set of clearanced rods that I won't be using... I don't see how they will work with a 78mm stroke and a 24mm piston pin. My crank has stock 2.0 rod journals, which is not ideal for a stroked Type IV, but it "saved" me over $400.

I'm looking into the possibility of having the journals ground to fit another rod, but I doubt that it is feasible... the 2.0 journal is smaller than most other rod journals.

I am taking the risk myself. I may fail, but I don't think that I will. I'll have fun though.